Well-drawn face. Try finding a technique for variating the lines' thickness. You've also got a good base in anatomy, it somehow looks real in a sense even though it's not entirely authentic for an enkidukai :]
If you choose to study Humanoid anatomy a friend of mine gave me this tip to copy Michelangelo's David on paper, which I never managed to do... It might help you on your way to artsy greatness :]