the hat should cast a shadow on the skull. the (ribcage?) could use some AA. facial expression wouldn't change the shape of the eye sockets but I'm sure you know that and assume it's a stylistic choice. shading on the underside of the hat is a bit unexplainable (the piece in generally needs to follow a more clearly defined lightsrouce). banding is present in many spots. would look quite nice with these fixes, I think.
I agree, will try and fix it, im having a lot of trouble when it comes to shading though. lol maybe I should remove the shading on the underside of the hat. thank you for comenting..:D oh and by the way cure you are a God(worshiping)