Ultra-Fine Line Art Portrait

[SUBJECT]'s ultra-fine line art portrait, from a frontal view, is entirely composed of thousands of perfectly straight black lines. These black lines are stretched between nails on white wooden boards, using line art techniques that use only black lines without other colors. Around [KEY FACIAL FEATURES e.g., eyes, lips, distinctive contours, scars, glasses, helmet edges, etc.], the line density is extremely high. In the highlight areas of [HIGHLIGHT AREAS e.g., forehead, cheekbones, nose bridge, chin], the line density is sparse, creating a strong contrast between the dense shadowed areas and the open, bright areas. The eyes are highly lifelike, with sharp [EXPRESSION-RELATED e.g. catchlights, reflections, Menacing / curious / determined] Eyes shining, proportions realistic, [EXPRESSION / GAZE DESCRIPTION e.g. intense gaze looking straight forward, brooding intense gaze, bewildered yet amused intense gaze] Looking straight ahead, [ADDITIONAL DISTINCTIVE DETAILS e.g. subtle parted lips, furrowed brow wrinkles, scarred smile, helmet framing the face] composed of overlapping lines, modern minimalist yet ultra-detailed line art portraits, pure black lines on a clean white background, macro close-up composition, showcasing the density and tension of lines, hyper-realistic line art, 4K