Just experimenting with a style where you use a small round brush tool to shade everything, I thought it turned out alright:
WIP, but what do you think so far?
the head shape is sort of lopsided. Like on the right it seems more elongated and stubbyier on the right. Maybe that's just because of the angle. But the shading is interesting and you hue-shifted well.
That transition from brown to blue is uh... pretty odd. It looks like he's got mold spores on his back.
Looks like a BG from Yoshi's Island.
It's pretty good, though.
The hue gets a little too extreme at the right side, but good job!
I don't think he cleaned up the lineart, just tried shading immediately.
Eh. It's alright, I guess.