Keep the original image unchanged. Do not alter the person's face, facial features, expression, pose, camera angle, framing, lighting, colors, background, or composition. Preserve the original close-up shot exactly as it is. The only modification should be adding a small realistic dark centipede crawling on the person's chin. The centipede should have a glossy segmented body and tiny legs, naturally following the contour of the chin with realistic contact shadows on the skin. It must appear photorealistic and naturally integrated into the original photo. Do not modify any other part of the image.
