Need help crafting better Leonardo AI prompts

Ai
1

I’ve been experimenting with Leonardo AI but my prompts keep producing generic or off-target results. I’m not sure how specific, detailed, or styled my prompts should be to consistently get high-quality images. Can anyone share tips, examples, or a clear structure for writing effective Leonardo AI prompts so I can improve my outcomes and avoid common mistakes

2

I hit the same wall with Leonardo for a while. What helped was treating prompts like a small spec, not a slogan.

Here is a simple structure that works well:

  1. Subject
  2. Visual details
  3. Style and medium
  4. Camera and composition
  5. Quality keywords
  6. Negative prompt

Example of a weak prompt:
“a fantasy warrior in a forest”

Example of a stronger one:
“female fantasy warrior, full body, standing in a misty pine forest at dawn, detailed leather armor, blue cape, short white hair, scar over left eye, holding a glowing sword, cinematic lighting, soft fog, 8k, highly detailed, artstation, digital painting, concept art, centered composition”

Then use negatives:
“ugly, disfigured, extra limbs, extra fingers, blurry, low resolution, distorted face, bad anatomy, watermark, text, logo”

Some practical tips that helped me get more consistent results:

• Always say what you want the model to focus on first
Example: “single subject portrait” or “wide environment shot”

• Specify number of subjects
“one female knight” or “three robots in the background”

• Anchor the style with 2 to 3 clear tags
For realistic: “photo, 50mm lens, natural lighting, soft shadows”
For stylized: “digital painting, anime style, flat shading, bold outlines”

• Use simple, concrete words
“red jacket, black boots, neon sign, rainy street” works better than vague vibes

• Lock in composition
“close up portrait, head and shoulders”
“full body, standing, centered”
“wide shot, subject small in frame, huge city in background”

• Use a consistent “quality block”
Things like: “high detail, sharp focus, 8k, global illumination, subsurface scattering” if you go for realism
Or “clean lineart, smooth shading, high contrast, crisp edges” for illustrations

• Reuse prompts with small edits
Change only 1 or 2 things per test: color, pose, time of day. That lets you see what the model pays attention to.

Example template you can tweak:

“[main subject], [age], [gender], [clothing and colors], [clear pose or action], [background type and mood], [lighting], [style and medium], [camera or framing], [quality terms]”

Then a separate negative field:
“low quality, low resolution, blurry, noise, distorted hands, extra fingers, extra limbs, asymmetrical eyes, watermark, text, logo”

One more trick with Leonardo:

• Pick a model that fits the goal
Use a photoreal model for portraits and products.
Use a stylized / anime / illustration model for characters and fantasy.
If you mix model type and goal, prompts feel off no matter how detailed.

If your results keep drifting, post one of your exact prompts and one of the images you got. People here usually spot prompt issues fast.

3

Couple of extra angles to pile on top of what @suenodelbosque already said:

  1. Don’t always go “more detail = better”
    Leonardo sometimes treats hyper‑stuffed prompts like a buffet and just grabs random bits. If your images feel chaotic or generic, try a minimal version of your prompt too and compare.

    Example:
    Verbose: “ultra detailed, majestic, epic fantasy, intricate armor, ornate background, glowing magic, swirling particles…”
    Cleaner: “male fantasy knight, full body, standing on a cliff, overcast sky, subtle magic aura around sword, photoreal style, muted colors”

    The second often hits mood and composition better.

  2. Front load the non‑negotiables
    Put your “must happen” items near the start of the prompt. Leonardo tends to prioritize the first parts more.

    Instead of:
    “cinematic lighting, high detail, concept art of a dragon and rider, red scales, night sky, full body, flying over a city”
    Try:
    “full body dragon with rider, flying over a city at night, red scales, concept art style, cinematic lighting, highly detailed”

  3. Use contrast words to steer style
    Phrases like “but not”, “without”, “instead of” can help when Leonardo leans into cliché stuff.

    Examples:

    • “cozy living room, modern furniture, warm lighting, without Christmas decorations”
    • “fantasy castle, realistic architecture instead of Disney style”

    It is kinda like mini negative prompts baked into the main text.

  4. Lock in vibe with 1 reference phrase, not 10
    I disagree slightly with stacking a ton of style tags. Two or three strong anchors usually beat a laundry list.

    Better:
    “digital painting, Studio Ghibli inspired”
    than
    “digital painting, Ghibli, Pixar, Dreamworks, anime, Disney, watercolor, oil painting, 3d render, lowpoly…”

    Too many styles = model shrugs and picks randomly.

  5. Iterate like this: “base prompt + micro swap”
    Instead of rewriting the whole prompt every time, freeze 80 to 90% of it and only change one variable.

    Run sets like:

    • same prompt, change “at night” → “at sunset” → “foggy morning”
    • same prompt, change “close up portrait” → “full body”

    When you get a result you like, save that exact prompt as a “template seed” and branch off it.

  6. Use the built‑in controls, not just text
    People often underuse Leonardo’s non‑text features:

    • Strength / guidance: if results feel too generic, increase prompt influence. If it feels overcooked or weird, lower it a bit.
    • Aspect ratio: super important for composition. “epic landscape” with a square ratio will fight the model’s instincts. Go 16:9 or wider for environments, 3:4 or 4:5 for portraits.
    • Upscaler: sometimes it is easier to get a good concept first at low res, then upscale, instead of forcing insane detail via text like “8k, ultra ultra detailed…”

  7. Think in “prompt layers”
    A nice mental model:

    • Layer 1: Core idea
      “old wizard, sitting at a wooden desk, writing in a big book”
    • Layer 2: Mood & color
      “warm candlelight, dark background, golden highlights, moody, quiet atmosphere”
    • Layer 3: Style & medium
      “oil painting, baroque style, thick brushstrokes”
    • Layer 4: Technical polish
      “high detail, sharp focus, realistic proportions”

    Write them in that order, then trim words that repeat the same concept.

  8. When outputs keep drifting, force a comparison test
    Take 3 or 4 of your last prompts that gave “meh” results, paste them side by side and ask yourself:

    • Are they all using the same style tag but asking for totally different moods?
    • Are you mixing “photo” terms with “illustration” terms in the same prompt? (Like “photo, DSLR, sketch, line art” together.)
    • Is there any word that shows up a lot but you never actually wanted, like “epic, cinematic, ultra, surreal”?

    Delete the fluff that doesn’t directly serve the scene.

If you can post one exact prompt + an output you hated, people can usually spot one or two “poison words” that keep derailing it. Sometimes removing a single overused tag like “cinematic” magically fixes the whole thing.

4

Skip the idea that there is a single “perfect prompt style.” Leonardo is moody, so think in systems instead of one‑off tricks. Building on what @suenodelbosque said, here is a different angle:

1. Write like a storyboard, not a tag cloud

Instead of firing a pile of adjectives, describe your scene in tiny “beats,” almost like shots:

  • Shot / framing
    • “medium shot, from waist up, character centered”
  • Subject
    • “young woman coder, short curly hair, glasses, neutral expression”
  • Environment
    • “small cluttered desk, two monitors, dark room”
  • Visual idea
    • “monitors show neon code, reflections on her glasses”

Then glue these together in one clean sentence. Leonardo seems to keep composition more stable when the text reads like a description, not a keyword soup.

2. Use constraints instead of more adjectives

Where I slightly disagree with stacking vibes: describing what is physically present tends to beat vague mood tags.

Bad:
“dreamy, mystical, ethereal, surreal, magical, fantasy atmosphere”

Better:
“thin fog on the floor, soft light beams from a window, tiny glowing particles in the air”

You are telling Leonardo what objects and light conditions to draw, which indirectly creates the mood.

3. Separate “design prompts” from “final prompts”

If your stuff feels generic, you might be trying to solve design and finish in one go. Try two passes:

  • Pass 1: Design
    • Focus: pose, silhouette, basic outfit, layout
    • Prompt with almost no style tags:
      • “full body robot chef, standing in a small kitchen, holding a frying pan, front view, neutral lighting”
  • Pass 2: Finish
    • Use that as an image input, then:
      • “same robot chef, cyberpunk neon kitchen, glossy metal, dramatic rim lighting, high detail”

This cuts down on chaos. Leonardo handles “refine this existing thing” more consistently than “invent everything plus finish it in one step.”

4. Learn what specific words do in Leonardo

Some words are landmines. Instead of deleting them blindly, run little tests:

  • “cinematic lighting” vs “soft studio lighting” vs “flat lighting” on the same core scene
  • “concept art” vs “illustration” vs “photo”
  • “volumetric lighting” vs “god rays” vs “backlit”

Make a small grid, see what each term actually does in Leonardo. You will discover that some buzzwords like “epic” or “4k” barely help, while “backlit” radically changes everything.

5. Micro control character identity

If you want consistent characters, describe them like a character sheet, not like a one‑shot poster:

  • “same woman as previous image, short black bob haircut, round glasses, light brown skin, faint freckles, blue hoodie, no makeup”

Repeat the same description in multiple prompts. Leonardo responds well if you make that identity description almost like a formula. Change only one trait when needed.

6. Talk to Leonardo like it is a camera crew

Phrase some prompts as instructions rather than labels:

  • “show the entire figure from head to toe, camera slightly below the knees, looking up”
  • “move the camera back so the mountain fits fully in the frame”
  • “rotate the scene so we see the dragon from behind, city below”

You are hinting at composition operations. This is especially useful when you keep getting weird crops.

7. Treat negative prompts as “safety rails,” not a garbage bin

Huge negative lists can confuse things. Try targeted rails:

  • “no extra limbs, no deformed faces, no text, no watermark”
  • If you hate a specific recurring look, kill it explicitly:
    • “no anime style” or “no plastic 3d render look”

Avoid stacking vague negatives like “no bad anatomy, no ugly, no messy, no weird,” since they are too fuzzy.

8. Pros & cons of this templated, layered prompting style

Pros:

  • Much higher control over framing and subject
  • Easy to debug: if something is off, you know which line to tweak
  • More consistent series: you can reuse the same “character sheet” and “camera” parts

Cons:

  • Slower to write at first
  • Feels less “creative” because you are specifying boring details
  • Overly rigid templates can make everything look samey if you never loosen up

Compared to @suenodelbosque’s approach, this leans harder into structure and test‑driven tinkering instead of mostly taste and trimming.

If you post one “fail” prompt plus image, people can help you identify which 2 or 3 words are poisoning your results, then you can fold that back into a reusable storyboard‑style template.