sketch-image-prompt

Original：🇨🇳 Chinese
Translated

Transforms article content or summaries into minimalist hand-drawn style JSON prompts for AI image generation tools. Use this skill whenever the user wants to create any kind of visual from text content — including banners, article illustrations, inline diagrams, infographics, or concept visuals. Trigger on requests like "turn this into a visual", "create an image prompt", "make an illustration for this", "generate a diagram from this article", "I need a sketch for this section", or any request combining content analysis with image/visual prompt generation. Always use this skill when the user provides text content and wants an AI-ready image prompt output.

3installs
Sourceokooo5km/skills4u
Added on

NPX Install

npx skill4agent add okooo5km/skills4u sketch-image-prompt

Tags

Translated version includes tags in frontmatter
ai-image-promptshand-drawn-illustrationprompt-engineeringmidjourney-toolsstable-diffusion-prompts

SKILL.md Content (Chinese)

View Translation Comparison →

Sketch Image Prompt

Convert text content into minimalist hand-drawn style image prompts for direct use in AI image generation tools like Midjourney and Stable Diffusion.

Workflow

Step 1: Ask for Aspect Ratio

After the user provides content, you must first ask for the aspect ratio before proceeding with analysis:
"What is the aspect ratio for this image?
Landscape:
  • 16:9 — Horizontal display / Twitter / Social media
  • 5:2 — Blog header / Wide landscape image
  • 21:9 — WeChat Official Account cover / Ultra-wide landscape
  • 4:3 — Universal landscape / Presentation slides
  • 1:1 — Square / Instagram / Profile picture illustration
Portrait:
  • 9:16 — Full mobile screen / Story / Vertical poster
  • 2:5 — Vertical long image / Mobile wallpaper
  • 9:21 — Ultra-long vertical image / Mobile long screenshot
  • 3:4 — Universal vertical image / Xiaohongshu"

Step 2: Internal Analysis (Do Not Output to User)

Complete the following analysis mentally, do not output this process:
  • Extract core theme (1 most central concept)
  • Filter key elements (select only 3-5 elements, it's better to choose fewer than more)
  • Identify element relationships (process / comparison / hierarchy / cycle / parallel)
  • Determine emotional tone → Infer color scheme
  • Select optimal layout based on aspect ratio
Color Scheme Reference:
Theme TypeBackground Color Recommendations
Technology/DevelopmentMint green series 
#D4F1D4
, 
#E3F2FD
Business/FinanceBeige/light peach series 
#F5E6D3
, 
#FFDAB9
Creative/DesignLight purple/light pink series 
#E6E6FA
, 
#FFE4E1
Education/KnowledgeLight yellow/mint series 
#FFF9E3
, 
#D4F1D4
General/NeutralWarm beige series 
#F5E6D3
Layout Reference:
Aspect RatioLayout DirectionMaximum Number of Elements
16:9Horizontal flow (left → right)5
5:2Horizontal extension5-6
21:9Ultra-wide horizontal, radial or simple flow4
4:3Horizontal to square transition5
1:1Centered symmetry, radial4
9:16Vertical stack (top → bottom)5
2:5Vertical extension5-6
9:21Ultra-long vertical, layered structure6
3:4Vertical to square transition5
For portrait orientation: Change horizontal "left → right" flow to "top → bottom", and horizontal comparison to vertical comparison.

Step 3: Output to User

Only output the following two parts, no other content:
[One-line design summary: Background color + composition type + number of elements, e.g., Mint green background, 3-step horizontal flow, 3 elements]

[final_prompt body]

Final Prompt Specifications

Mandatory Content

  1. Aspect Ratio Parameters (based on tool format)
    • Midjourney: Add 
      --ar 16:9
      (or corresponding ratio) at the end
    • General description: Start with 
      16:9 horizontal composition
      or 
      9:16 vertical composition
    • By default, include both general description + Midjourney parameters for compatibility with both tools
  2. Visual Style (fixed):
    • minimalist hand-drawn illustration
    • bold marker illustration, chunky brush-pen style
    • very thick black outlines, heavy stroke weight, bold chunky lines like a children’s book illustration
  3. Brush Texture (must be described in detail):
    • dry brush texture with tiny gaps in ink coverage
    • organic slightly rough edges
    • natural line weight variation but always heavy and bold
    • imperfect circles and slightly wobbly lines
    • warm handmade feel, NOT perfect vector lines, NOT thin lines — bold chunky strokes only
  4. Color Scheme: Background color (with hex code) + 
    black #000000
    main color + accent color (if applicable)
  5. Composition & Elements: Layout method + visual description of each element + connection method
  6. Simplicity Keywords:
    • minimalist
      , 
      extremely simple
      , 
      clean
      , 
      uncluttered
    • generous whitespace
      , 
      only 3-5 elements total
    • minimal text
      , 
      1-3 words per label
  7. Typography: 
    rounded handwritten-style font, casual and friendly

Final Prompt Template Structure

[Aspect ratio] [composition type] composition. [Background color description]. Only [N] elements: [Element 1 description], [Element 2 description], [Element 3 description]. [Connection method description]. Bold marker illustration, chunky brush-pen style, very thick black outlines with heavy stroke weight — like a fat-tipped marker, bold chunky lines. Dry brush texture with tiny gaps in ink coverage, organic slightly rough edges, natural line weight variation, imperfect circles and slightly wobbly lines, warm handmade feel — NOT perfect vector lines. [Color scheme description]. Minimal text labels only: [List of labels]. Generous whitespace, clean and uncluttered, flat illustration with no shadows or gradients, rounded handwritten-style font. --ar [X:Y]

Language Rules

  • Design summary follows the user's language
  • final_prompt
    must always be in English