Hi @David Gutmann, nice drawings! Good gesture and shading, I can clearly feel the forms. - I would do some deeper studying of the anatomy to make sure you know all the muscles from this lesson and their attachment points. In drawing 2, I'm unsure whether you're aware of the biceps's insertion point at the radius and the presence of the brachialis, since they don't seem indicated (though I'm seeing a light line that might be part of the brachialis). Maybe you were, but choose to leave it out for a focus on light- and shadow-shapes? You can shade of course, though for your anatomy studies I would recommend that you lightly indicate, or at least in the lay-in, find the muscles and bones that lie deep as well. In image 3 you've indicated the coracobrachialis, though I'm unsure whether you know where it's heading for the coracoid process. In drawing 4 you seem to have grouped the biceps with the brachialis into a single cylinder. Hope this helps :) Keep up the good work!

Hi @David Gutmann, great studies! - In image 1, I think the posterior head might be a little large, and I don't think the lateral head should send a long tendon to the acromion; I think it's muscle all the way. - I would recommend finding the humerus when doing these, and lead (with lighter lines of course) the deltoid all the way to its insertion. Otherwise it might look like the deltoid attaches to the outside surface of the arm. - About you question in image 5 "how does the posterior deltoid attach to the scapula?". It attaches to the lower edge of the spine of the scapula down to (but not including) the small triangular plane near the medial ridge. Hope this helps :) Keep up the good work!

Hi @David Gutmann, nice studies! Great job with the gesture and structure! - The proportions are a little off. In #4 the hand is a bit tall. In #1, 3, 4 & 5, the middle phalanges of the bent fingers seem to long in relationship to the others. - In #2, I think you're placing the hand too much out of the radiocarpal joint. See if you can find where the carpals start on your hand when your hand is palmar flexing. You'll find them close to the plane break; the carpals are still in the socket of the radius. Hope this helps :)

Really nice!