Try to make some depht inside the skull - burn/ dodge.

Thanks, greymval, I knew it needed "something," but couldn't put my finger on it.

i think adding a ridge along where the face was "removed" would help add to the dimension of the piece. right now, it looks like his face was paper thin.
some softening back on the horizon line would help blend it together as well, maybe use a soft edged eraser set at a 15% opacity just to soften the edge a bit and show some of his sweater through the tree line.
and otherwise, i like it. original concept...the title is suiting. You might think about softening your sunrays back there so they aren't so bold. but thats just a suggestion.
Good Luck

It looks real cool.... I like your idea... good luck.

Triiipy!!!! GL!