I was bored, so whipped this up.

Quote from Salt

I was bored, so whipped this up.

Image is broken

Edited it. Better?

It looks nice. It's got the basic form, the shading is really nice. Really, there are only small details that are off about it that could be improved through refining the edges and such. For example, on the right side (left half of the skull, right from the view), there's a weird bump not present in the reference, and the eye hole is bit too round.

Thanks Azure <3

Pretty good.
You've done a nice job with the shading, so all I can really recommend is that you try to add some more minor details, it'll look better with both soft shading and some more fine details here and there. And don't be afraid to add some darker tones, especially with the gum line.