the brim ob the side facing us has a dark line running between two lighter lines, which makes it look a bit strange. is this a straw hat? i would also clean up the bottom edge so it's mot so jagged. otherwise. color's and shading look good to me.

sorry for all the typos! that's what i get for trying to use the laptop in bed. what kind of a character is this for? i was thinking a straw hat because it kind of fit with the colors and shape, but in context of your character (in terms of perspective, size, and setting) it could very easily look completely different: a small sailor's cap, a fantasy peasant's hat, a pirate's pointed hat, etc.