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profile, from side, muscular male, chest, pectorals, shoulder, upper arm, torso, drawing tutorial, anatomy reference, instructional diagram, worksheet, reference sheet, geometric shapes, wireframe overlay, dotted line, arrow (symbol), clean lineart, flat shading, flat lighting, white background, simple background, side profile view of a muscular male torso presented in the format of an educational art-book anatomy tutorial page, framed closely from the side to capture the chest, shoulder, and upper arm against an entirely seamless, pure white background. The physical anatomy is rendered in crisp, clean black lineart of uniform weight, delineating the contour of the heavy pectoral muscle, the rounded cap of the deltoid, the curve of the tricep and bicep, and the lateral arc of the ribs. Overlaid across the ink drawing are clear red and blue 3D construction volumes: a pale blue egg-shaped box with rounded edges encapsulates the volumetric tilt and depth of the ribcage; anchored onto the anterior plane of this box, a thick translucent red wedge projects firmly forward and slopes downward to establish the blocky, gravity-weighted mass of the pectoral muscle; a translucent blue sphere sits at the shoulder joint, which transitions into a straight blue cylinder enclosing the core mass of the upper arm. Fine red dotted vertical guide lines drop from the forwardmost apex of the red pectoral wedge down past the ribcage to clearly measure the overhang of the muscle shelf. A small, sharp red annotation arrow points directly upward into the deep underside crease where the pectoral muscle tucks beneath itself against the ribcage wall. Shading consists exclusively of simple, flat graphic tone applied to the underside plane of the pectoral wedge and the back of the arm, illuminated by flat, even diagrammatic light across the entire plate. The palette is strictly confined to black ink lines, soft neutral grey tone fills, vibrant technical red and cyan-blue overlay shapes, and the stark white ground, analytically precise.
Oct 14, 2026 9:34 PM
