Hey there! Overall, I think the heads are looking good, but there are still a few things you could improve. The main one is the head where we can see the underside. Try thinking of the front of the head as if it were a flat sheet of paper that's been folded. Simplifying the front plane this way will make it much easier to draw the face from different angles. As for the jaw, in general, the jawline doesn't come straight down from the side of the head. Instead, it angles downward slightly. Also, notice that the cheekbone line starts from around the middle of the side plane of the head. I hope this helps! :) | Artwod Feedback