Viral YouTube Thumbnail Template — AI 图像提示词

Create a highly clickable YouTube thumbnail. SUBJECT: {argument name="subject" default="main character/object/person"} EXPRESSION / ACTION: [strong emotion, reaction, movement, pose] COMPOSITION: [close-up / medium shot / wide shot] [subject placement] [camera angle] [foreground/background separation] VISUAL HIERARCHY: primary focus should immediately draw attention to [important subject] secondary details should support the story without clutter LIGHTING: {argument name="lighting" default="cinematic lighting style"} [rim light / glow / dramatic contrast / soft light] COLOR DISTRIBUTION: dominant colors: [ ] accent colors: [ ] high contrast between subject and background BACKGROUND: [simple readable environment] avoid clutter support the narrative only STYLE: [realistic / anime / cinematic / watercolor / stylized / etc.] THUMBNAIL OPTIMIZATION: ultra readable at small size high contrast silhouette large facial expression clean negative space minimal objects strong emotional clarity high saturation focal points professional YouTube thumbnail composition ASPECT RATIO: {argument name="aspect ratio" default="16:9"}