# Engineer's chalk annotations

> Overlay white-chalk blueprint annotations on a photo without changing the photo

Steal this: Layer hand-drawn engineering notes over any photo and tell the model not to touch the photo.

- Category: Prompts (`prompts`)
- Wunderlust: https://wunderlust.xyz/r/prompt-engineer-chalk-annotations
- Works with: Nano Banana
- Image: https://wunderlust.xyz/media/prompt-engineer-chalk-annotations-poster.jpg
- Video preview: https://wunderlust.xyz/media/prompt-engineer-chalk-annotations.webm
- Added: 2026-11-09

## What it is

An image prompt that overlays handwritten technical notes on an attached photo: labels, arrows, dimensions, forces and cross-sections in white chalk and clean sketch lines, matching the perspective of the objects.

## What it’s for

Create an image with annotations, as if an engineer drew over a blueprint in chalk.

## Benefits

- Explicitly forbids editing the original photo
- Lists example annotation types to steer the result

## Caveats

- Needs an image model that accepts a photo, and you attach your own picture.

## Prompt

```text
Overlay technical engineering handwritten annotations on top of the image. 

Use white chalk-style handwriting and clean technical sketch lines.Include labels, arrows, dimensions, forces, engineering diagrams, and cross-sections.Style: blueprint-like doodles, hand-drawn schematics, minimalistic, precise but casual. 

DO NOT modify the original photo; only overlay the drawings.Match the perspective and structure of the objects in the image, as real engineering notes.

Examples of annotations: tension/compression diagrams, dimensions, cable cross-sections, force vectors, structural notes, materials, load paths, geometry measurements.Make handwriting look like an engineering notebook: thin white stroke, subtle glow.
```

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