步驟 1
Attach the existing source
Use the existing finished source shown here.





Build bold video thumbnails with a clear focal point, strong contrast, readable title space, and a clean small-size composition.
Describe the video topic, audience, focal point, and visual mood you want viewers to notice first.
Request stronger contrast, expressive subject placement, and a clear title-safe area through follow-up descriptions.
Review the thumbnail at small size, refining hierarchy and title space so the video topic reads quickly.
Thumbnail-focused design
Turn your topic, tone, and key message into a focused composition designed to remain recognizable when viewers scan a crowded feed.






Attach the existing source, request one edit, and review the edited result.
步驟 1
Use the existing finished source shown here.
步驟 2
Describe the change to the attached source.

步驟 3
Check the result against the requested details and preserved constraints.