The main focus of this drawing is the figure's back. However, you'll see that the forearms are angling away from your eye. So it's the arms we should look at here. Try and see in your mind's eye how this figure's arms could be broken down into three dimensional cylinders. The deltoid, the top of the shoulder, could be seen as it's own 3D element. The the upper arm and lower arm can be seen as two separate cylinders. Click next to see how this figure's arms could be broken down and simplified.