it looks like you cnped a diablo1 health potion instead of his skull. the staff looks worse than before, it looks like you screwed with something here. the rest except his head have a poor amount of changes. the skull have some kinds of holes on it, where there is grey at one points, then dots of yellow-grey and then more grey, you could use smudge to put it all together
personally i dont like it at all, not enough changes, but the default skin cant really be changed