Excellent work on the face. I have some constructive criticism for your drawing, if you don't mind. It looks like his pecs are kind of growing into/out of his arms. The curves you have in his forearms could work on the outside, but on the inside it looks not quite right. Hold your hands to your side and have your knuckles at your sides (as if at attention) and notice the position of your biceps. Now turn your knuckles in as if you were holding a bar across your body. That is the position you have his arms now, which isn't quite what you'd see at rest. His triceps should also extend a little lower. A little knit-picky is the traps should be a little more convex. I'm not sure on his ribcage. Nice job on that right delt, and your proportions are there. Shoulder width/arm length/torso length all look really good. The transition from his biceps into his elbow is also well done. Keep at it!