Transform text content into minimalist hand-drawn style image cue words, and use the generated cue words to create illustrations with Nano Banana Pro.

## Workflow

Step 1: Inquire about the size proportions

After the user provides the content, **the size and proportions must be requested first** before analysis can proceed:

What is the aspect ratio of this image?

>

Landscape mode:

> - **16:9** — Landscape view / Twitter / Social media

> - **5:2** — Blog header image / Wide landscape image

> - **21:9** — WeChat Official Account Cover / Extra Wide Format

> - **4:3** — General Landscape Layout/Presentation

> - **1:1** — Square / Instagram / Profile Picture

>

Portrait mode:

> - **9:16** — Mobile Full Screen / Story / Vertical Poster

> - **2:5** — Vertical Long Image/Mobile Wallpaper

> - **9:21** — Vertical extra-long image / Long screenshot on mobile phone

> - **3:4** — Vertical Universal Image / Xiaohongshu

### Step Two: Internal Analysis (Not Output to Users)

Complete the following analysis in your mind, **without outputting the process**:

- Extract the core theme (one most essential concept).

- Filter key elements (select only **3-5**, err on the side of less rather than more).

- Identify element relationships (flow/comparison/hierarchy/loop/parallel)

- Determine the emotional tone → Infer the color scheme

- Select the optimal layout based on proportions

**Color Scheme Reference:**

| Theme Type | Background Color Suggestions |

|---------|-----------|

| Technology/Development | Mint Green Series `#D4F1D4`, `#E3F2FD` |

| Business/Finance | Beige/Light Peach Tones `#F5E6D3`, `#FFDAB9` |

| Creative/Design | Light purple/light pink tones `#E6E6FA`, `#FFE4E1` |

| Education/Knowledge | Light yellow/mint shade `#FFF9E3`, `#D4F1D4` |

| General/Neutral | Warm Beige Tones `#F5E6D3` |

**Layout Reference:**

| Proportion | Layout Direction | Maximum Element Limit |

|------|---------|---------|

| 16:9 | Horizontal flow (left to right) | 5 |

| 5:2 | Horizontal extension | 5-6 |

| 21:9 | Extremely wide horizontal range, radiating or concise process | 4 |

| 4:3 | Horizontal/Square Transition | 5 |

| 1:1 | Centrally symmetrical, radial | 4 |

| 9:16 | Vertical stacking (top to bottom) | 5 |

| 2:5 | Vertical extension | 5-6 |

| 9:21 | Extremely long vertically, layered structure | 6 |

| 3:4 | Vertical/square transition | 5 |

In portrait mode: the left-to-right flow in landscape mode is changed to top-to-bottom, and horizontal comparison is changed to vertical comparison.

Step 3: Generate prompt words

Only output the following two parts, and do not output any other content:

```

[One-line design summary: background color + composition type + number of elements, e.g., mint green background, horizontal three-step process, 3 elements]

[final_prompt body]

```

---

## Final Prompt Specification

### Required Content

1. **Scale parameter** (depending on the tool's format)

- Midjourney: Add `--ar 16:9` (or the corresponding ratio) to the end.

- General description: Begin with `16:9 horizontal composition` or `9:16 vertical composition`

- By default, it writes both the general description and the Midjourney parameter, ensuring compatibility with both tools.

2. **Visual Style** (Unchanged):

- `minimalist hand-drawn illustration`

- `bold marker illustration, chunky brush-pen style`

- `very thick black outlines, heavy stroke weight, bold chunky lines like a childrenΓÇÖs book illustration`

3. **Brushstroke 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 (including color code) + `black #000000` primary color + accent color (if any)

5. **Composition and Elements**: Layout method + visual description of each element + connection method

6. **Concise keywords:**

- `minimalist`, `extremely simple`, `clean`, `uncluttered`

- `generous whitespace`, `only 3-5 elements total`

- `minimal text`, `1-3 words per label`

7. **Typesetting**: `rounded handwritten-style font, casual and friendly`

### Final Prompt Template Structure

```

[Proportion] [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: [Label List]. Generous whitespace, clean and uncluttered, flat illustration with no shadows or gradients, rounded handwritten-style font. --ar [X:Y]

```

### Step 4: Generate illustrations based on prompts

## Language Rules

- Design summary follows user language

- `final_prompt` **Always use English**