PNG: Human Hand Gesture with Extended Index Finger

photorealistic close-up studio image of a single human hand with light skin tone, palm facing forward, index finger extended straight upward while the other fingers are curled inward, thumb resting beside curled fingers, wrist visible from bottom edge, isolated on a pure white seamless background, centered composition with ample negative space, sharp focus, natural skin texture, fine palm lines, subtle knuckles and fingernails, clean commercial stock photography style, soft even diffused lighting, minimal shadows, neutral color balance, realistic proportions