You need to move the smile up. by about 50%. And you need to adjust the upper lip so that it is more over the teeth or move the teeth up and have a bigger dark gap between the bottom row. Other than that it is good. Shade and detail away! Even with mine I get lopsided featured and have to go back and adjust. A lot Even my Centaurs eyes are still crooked. *sighs* I often find if you step back for a few hours or a day then go back to a sketch you can figure out what is up with it.