Carbon stick sketch portrait, facial features close-up AI Image Prompt

Generate a portrait drawn with carbon stick pen sketch based on the first photo. Front-facing slightly sideways head illustration, close-up of facial features: 1. Keep only the face (fine realistic depiction of expression and features, clear details); 2. Clothing treatment: keep a small amount of realistic detail on the collar, achieving a clear transition from realistic face to abstract lines of the body; 3. Background: only in the area behind the left side of the neck, fill with hand-drawn double-layer gradient hatching: inner layer with high-density compact pencil lines (dark), outer layer with low-density loose pencil lines (light), forming a dark-to-light transition with clear and neat edges; 4. Overall pure black and white pen texture, no color, presenting a hand-drawn sketch effect. Presented in photographic-level realistic style, on realistic sketch paper with slight frayed edges and use marks, portraying a dignified portrait with a calm and restrained aura, delicate and realistic facial details, but slightly rough and casual brushstrokes on clothing and background, adding a relaxed artistic sense. At the lower left of the picture, write a scribbled English artistic signature in pencil. Natural top light evenly spreads on his face, softly outlining the facial contours, making the skin texture layers clearly visible. The overall picture has a thick and delicate texture, full of charm. Original ratio.