High CTR Reaction Thumbnail

Full prompt

YouTube thumbnail composition for a tech review video. Environment: bold two-tone split background, subtle radial burst behind the subject. Pose: creator on the right, exaggerated surprised expression, one hand gesturing toward empty left space. Composition: subject right third, large clean left area reserved for 3-4 words of text, product floating mid-left with a glow. Camera: 35mm, chest-up crop. Lens: f/2.8. Lighting: bright even key on the face, colored rim lights left and right for separation. Colors: electric blue and hot yellow, high saturation, hard contrast. Mood: urgent, exciting, must-click. Details: crisp subject cutout edge, drop shadow separation, subtle outer glow. Quality: 1280x720 optimized, readable at 20 percent scale. Negative prompt: blurry, low resolution, watermark, text artifacts, extra limbs, deformed hands, oversaturated skin, jpeg compression, flat lighting.