Hi, Nice drawings. I did notice though, in the 2nd drawing on page 1 and the 2nd drawing on page 3 the cylinder at the bottom of the humerus is facing the wrong way. It just needs to be rotated 90 degrees so it looks like the one in your first drawing. Similar issue with the right arm in the rib cage drawing. We can see the side of the model's left shoulder, so the side of the right shoulder shouldn't be visible. It would be facing away from us. Hope that helps. Check out Stan's free videos on structure in the figure drawing course. Very useful!