A 3:4 ratio abstract portrait illustration of a young man with shoulder-length wavy black hair, a thin mustache, and no beard. The portrait is composed of a grid of square cells, each filled with different monochrome patterns such as line hatching, cross-hatching, geometric wireframes, scattered strokes, or repetitive marks. Each square contributes to the shading and form of the man’s face and hair, arranged in a pixel-art-like mosaic. The overall tone should remain minimalist, hand-drawn, and technical, using only black ink on a white paper background. The face is slightly turned to the side, with subtle expression, resembling a sketchbook experimental artwork.