林布蘭光

Use Rembrandt Lighting: one controlled key from upper camera-right illuminates the smaller far side of the existing turned face. On the larger near cheek on image-left, connect the nose shadow with the cheek shadow, leaving one clearly visible small triangular patch of light immediately beneath that eye. The triangle must emerge naturally from the nose and cheek shadow geometry, no wider than the eye and no longer than the nose, never painted onto skin. Keep the rest of that near cheek in deep but readable shadow; reduce frontal fill. Preserve the exact face, head angle, expression, portrait framing and all illustrated details. No visible light fixture.