I feel like the shading on the hat was a stylistic choice. Personally, there's nothing I don't love about this, except having no idea who the character is, but that's on me.
Whew, this looks really nice - cool palette choice. I think the only problem I have with it is the oddly... triangular patches of shading on the hat?
Nah the hat was a mistake, thank you for the feedback though. I definitely didn't pay enough attention to that area