Thanks man, i'm going to fix it when i have some free time. XD
The perspective looks a little bit conflicted between the left and right side of the face, and the right cheekbone and right side of the chin could jut out a bit more I think. Nice face tho, has character. I like the shading too.
Humble edit (:
Hmm...just a thought, but the right side may have turned out better if you had added a bit more texture to it. From looking at the rest of your art, it surprised me you didn't add more texture such as wrinkles to this.
Good colors and shading, perfect, I am using you avatar kkk
IMO, it is probably because the cheek to our right appears to have more volume than the other cheek. I don't do enough anatomy homework so take this with a grain of salt though.