Thumbnail A/B Test Designer

Design 3 thumbnail variations for testing on a video titled "{{video_title}}".

Video topic: {{topic}}
Target audience: {{audience}}

For each variation, specify:

1. **Visual Concept**: Main image/scene description
2. **Text Overlay**: Exact words (max 4 words)
3. **Color Scheme**: Primary and accent colors
4. **Emotional Trigger**: What feeling should it evoke?
5. **Face Expression** (if applicable): Specific expression to use

Explain the hypothesis behind each variation and what audience segment it targets. Recommend which to test first based on {{channel_style}}.