Um, crap. Got carried away again. Was just gonna do anatomy changes... o_O
edit:Forgot pointers.
You've got 18 colors, you can make do with a lot less. I've unintentionally hunched him over a mite, but the shoulders are roughly in the correct positions. On second thoughts, they should probably be raised a tad, especially his left. Blocked in the lighting and shadows, shifted the head, tweaked the head shape, added a neck, tweaked the hat (it was still a mite narrow in your last update), and roughed in the second arm. Totally carried away, sorry. :O