Thumbnail Brief Generator

Create a prompt template for generating thumbnail briefs:

My thumbnail style:
- Visual approach: {{visual_style}}
- Text usage: {{text_approach}}
- Color palette: {{colors}}
- Face usage: {{face_usage}}

Generate a prompt template that will:

1. Extract the key message from any video concept
2. Identify the emotional trigger to target
3. Suggest visual composition elements
4. Recommend text overlay content
5. Specify facial expression if applicable
6. Define color contrast requirements
7. Include mobile-first sizing checks
8. Add A/B variation suggestions

The template should be usable for any video topic while maintaining brand consistency.