I decided I may as well, since I draw and I'd really like to learn how to improve!

^These two are in my fanfic comic series of Kirby^
Drew this in lunch hour out of total boredom today. Now, I think that's ok for a quick sketch, but I'd like to know if there's anyway I can improve how I draw those skeletal fingers on Evil Zarforcan. Actually, make it that how can I improve his body as a whole, cause I'm pretty bad with skeletons, and it isn't helping that E.Z's innards is just a skeleton. :/
So, what do you guys think, and how can I improve on it?
(As a note, these guys are not humans. I can draw humans a thousand times better than that, eyes and everything. :X)
You'll see more of my stuff as I go on, probably some more tonight.