Grok Image Prompt Optimizer#

Use this skill when the user wants a prompt rewritten so image quality, composition, and thematic accuracy improve.

Goal#

Turn vague or overstuffed requests into prompts that are:

• visually focused
• easy for Grok to parse
• poster-friendly
• print-friendly
• less likely to produce clutter, cheap ad style, or incorrect details

Core workflow#

1. Extract the brief into 8 fields:
   • subject
   • action
   • setting
   • required safety/detail elements
   • mood/value signal
   • style
   • composition
   • output constraints
2. Reduce the scene to one main visual idea. If the brief contains too many ideas, choose one hero scene and move the rest into supporting details.
3. Rewrite into a structured prompt instead of a rambling paragraph.
4. Add a matching negative prompt.
5. If the use case is a poster, explicitly require:
   • vertical layout unless told otherwise
   • strong focal point
   • clean background
   • reserved negative space for title/text
   • print-ready detail
6. If the brief involves regulated or technical domains, prioritize plausibility over spectacle.

Prompt structure#

Default structure:

text

[subject], [action], [setting], [key required elements], [mood / value], [visual style], [composition], [lighting / palette], [output format]

For Grok, prefer 1 clean prompt over multiple conflicting clauses.

Default output format#

When optimizing a prompt, output:

1. Main prompt (CN)
2. Main prompt (EN)
3. Negative prompt
4. Quick tweak knobs
   • more official
   • more creative
   • warmer
   • stronger poster feeling

Grok-specific heuristics#

• Prefer clear nouns and visible actions over abstract slogans.
• Keep 1–3 human subjects unless the user explicitly wants a crowd.
• If the image is for a poster, say "poster composition", "clear focal point", "negative space for headline", "vertical A3".
• If the image should feel official, use words like:
  • professional
  • trustworthy
  • orderly
  • clean
  • premium
  • realistic illustration
• Avoid asking for too many safety devices in equal visual weight. Choose one primary action and let the rest support it.
• If the user says results feel generic, strengthen:
  • camera angle
  • lighting
  • focal hierarchy
  • signature scene detail
  • emotional tone
• If the model keeps making commercial-ad images, add:
  • public service poster
  • official campaign visual
  • not commercial advertising
  • restrained design
• If the model keeps making messy scenes, add:
  • minimal clutter
  • clean cabin background
  • strong central composition
  • limited supporting elements

Technical-domain guardrails#

For aviation, transport, healthcare, industrial safety, or emergency imagery:

• keep actions believable
• keep equipment recognizable
• avoid sci-fi styling unless requested
• avoid disaster-movie panic unless requested
• avoid sexualized uniforms or fashion-shoot styling
• avoid impossible cabin layouts

Aviation / cabin-safety pattern#

When the brief is about cabin safety posters, use this recipe:

text

Chinese civil aviation cabin safety poster,
[1 main crew subject or 1 small crew group],
[one concrete safety action],
inside a clean modern aircraft cabin,
[1-3 supporting safety elements],
conveying professionalism, responsibility, warmth, and trust,
realistic illustration, premium official campaign poster,
clean blue-white palette with restrained safety-orange accents,
vertical A3 composition, clear focal point, reserved negative space for Chinese headline and copy, print-ready detail

Good primary actions:

• demonstrating seat belt use
• guiding passengers to stow baggage correctly
• pre-departure cabin safety briefing
• calm emergency procedure demonstration
• assisting compliant passengers during safety preparation

Avoid combining all of these equally in one frame.

Contest-poster rules#

If the user is entering a contest, bias toward:

• one memorable hero shot
• strong symbolic clarity
• emotionally legible values
• less stock-photo feeling
• less corporate ad feeling
• more designed poster feeling

Useful style phrases:

• competition-grade poster
• public service campaign visual
• premium realistic illustration
• editorial poster design
• cinematic but restrained lighting

Negative prompt starter#

Adapt as needed:

text

low resolution, blurry, distorted hands, extra fingers, deformed face, messy composition, cluttered background, incorrect equipment details, incorrect cabin layout, cheap commercial advertising style, overdone sci-fi, anime style, childish cartoon style, garish colors, random text, watermark, logo errors

Tuning patterns#

If result is too plain#

Add:

• dramatic but restrained lighting
• stronger visual hierarchy
• competition-grade poster design
• more iconic hero composition

If result is too busy#

Add:

• simplified background
• only one main action
• minimal clutter
• fewer secondary subjects

If result is too much like a photo#

Add:

• premium realistic illustration
• poster design quality
• editorial composition

If result is too much like an ad#

Add:

• public service campaign poster
• official safety communication visual
• restrained, serious, trustworthy tone

Response style#

Be decisive. Do not dump theory unless asked.

When the user provides a brief, produce polished prompts immediately.

Optional reference#

If the task is specifically about aviation safety or official poster work, also read:

• references/aviation-poster-patterns.md