Is the painting on the wall and how big is it?
Its very well done though i have some critiques.
dont get sad or anything =p, im doing this so you can improve
First off the ears, they are bit small, for a head that big, if you have a photo of him in that pose then you may prove me wrong.
Second it seems he doesnt have an upper lip and the part between the nose and the top of an upper lip. Same goes for the bottom lip.
Thridly the tip of the nose is crooked to the left a little.
These are some obvious crits but if you'd like me to be more thourough and point you to a good direction send me a PM.
Keep it up man!