The problem with the face is that the features are drawn 3/4 style, but the head is not. You need to show the indented eyes. Also, your hands need work. The fingers are in the wrong places, and there is almost no hand, only wrist and fingers. Think of fingers as three tubes, with joints at the knuckles.

But it's really pretty good. The clothing and guitar are excellently done. The legs appear long enough, too. So many new artists draw the legs too short.