「With the clear ocean of Okinawa in the foreground,、Create a thumbnail image that shows the colorful coral reef on the bottom.。This sea sparkles in the sunlight.、Gentle ripples spread across the water surface。In the background, a small island can be seen in the distance.、The sky is clear and blue.。This image is 16:With an aspect ratio of 9、Aim for clear, vibrant visuals that are perfect for YouTube thumbnails。To enhance visual engagement、Brighten the image、Make it colorful but still highlight the natural beauty.。」

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))