Hey Web, these are nice. The only thing that sticks out is the front center drawing. The face seems stretched, like the jaw is being pulled down by a string at an angle. Still, it's way better than what I can do - and I know these are quickly made.
yeah, I needed a little more shadow in there or a line to delineate the actual jaw - those lines that look like the jaw are actually wrinkles. The first three are 5-minute poses, the last two are 10-minute poses.