Also another thing is I like freelancers idea of making him on earth. I think you should maybe try that.
Ps. 1000'th post DDd

is it a skull and---- and iris & pupil? u could ve made that black a shape with some meaning.

I agree with Freelancer, it feels a bit flat even after the update tho using a broader spectrum of colors could make it look more appealing. I don't really see what the middle (pupil) aims to resemble but turning it into a flame could add some contrast to the blue and white iris as well as a separation of the beige jaw (skull) and the white teeth. Then again it may only be me spotting a pixel "edge" in the upper right corner of the skull? =P

Honestly yes, it does seem a little flat, but it's still impressive ^-^
- Why not try some different shading techniques?
7/10

Nice idea,
but watch out for those teeth,
They look like worn down nubs
Just watch out for proportions in the skull, and in the teeth, and you'd have something that I recommend you sell as a logo.