Maybe something that the skull is attached to? Cause it looks kinda odd with just having a skull put on his shoulder.
Maybe you could transfer over some useful animations to him
the skull IS his shoulder, it's a shoulderpad/pauldron/whatever
I fully understand that but you should make some sort of plate thingy or something that the it's attached to, or maybe just some ropes.
Other idea: add something to his back! Like a shield or banner or something.
Other idea: add something to his back! Like a shield or banner or something.