http://imgur.com/16fULnU

They look really rushed and not very good.
I like the designs, but you could have put more effort into it,

use the picture embed

EDIT: Holy shit, it was very big so i had to put in spoiler tags
as Irrita said, it was very rushed, try sharpening your pencil so you can get a finer touch on the drawings

ah, yeah, I couldnt think of a design, I drew all of this in less than 30 minutes.

I could turn these into real heads sometime if you wanted.