A detailed anatomical illustration of a human shoulder joint on a solid black background, bones and muscles rendered as dense, smooth chalk-like fibers that follow the natural contours of the anatomy, all fibers contained within the silhouette of the shoulder, subtle green glow at the glenohumeral joint, chalk-on-black style, soft diffused edges, high contrast, hyper-detailed, volumetric shading --ar 4:3 --v 8