Vertical YouTube Shorts thumbnail frame, 9:16 aspect ratio. A confident young female presenter standing on the right side, looking directly at camera, soft studio lighting, natural skin tones, modern modest outfit. Left side designed as clean infographic space showing different nail shapes with minimal nail icons arranged vertically. No text inside the image. Background: smooth gradient blue-gray, minimal, modern, aesthetic. High contrast lighting, sharp focus, professional composition, vibrant colors, beauty and lifestyle style, ultra realistic, 4k quality.