You lost me at 4:00 - 4:15. I'm not sure what those lines are suppose to be. That's the latissimus dorsi region but we didn't go over any striations when learning to draw it in the form video. I'm thinking maybe the teres major, but it looks so far away from the rib cage I can't imagine the scapula being way out there for the teres major to be positioned liked that.

I really don't understand the first example in this video. The model is able to have the inferior border of the scapula almost horizontal, but Stan draws it at barely an upward angle. Am I misunderstanding how the scapula is positioned in the model and it is being drawn accurately or is Stan taking some liberties and drawing it not as extreme?