This looks exactly like AlphasoniK's unfinished demon head....Was it your reference ?
It's also cluttered, avoid using a lot of objects in one head texture since they don't look symmetrical.
Good mapping, but the plate on the mouth is bugging me.
There is a bit of flow, but some objects ruin it (like the mouth plate)
Use more colors, it looks dull now.
The could use a bit of depth along with the face itself.
These are mostly the negatives^ the rest is good.