That's amazing. I love every bit of it so far, except something looks a bit off with the eye. Maybe it's intentional, but the pupil looks really crooked.
Epic nonetheless, if you made this a full set it would sell for millions. :P
Ferr, try to make teeth not like from paper. Or try to re-draw it tottaly. And it will be realy epic head. It will be like "fresh air" for me in art board.