Close-up of a finger drawing a curved line on a dark surface, realistic style.

A close-up of an index finger making a curved line along on a dark, textured surface. The finger is pressing lightly, revealing a clean strip. The line created by the finger must clearly be grey. The lighting is soft and slightly angled, casting subtle shadows to emphasize the curved line. The focus is sharp on the index finger and the line, while the background is gently blurred for depth. See more