Look at the attachment in this post for image; I'm too lazy to upppy atm.
As I said earlier, face should be nearly twice as high as it is wide; my drawing is at about a 1.75:1 ratio because the 2:1 looked silly to me (2:1 may look best, it may not. I'm not sure). The chin needs more pointing; it's too rounded right now and we're shooting for an anime-esque look, as oppose to a chubby kid look (see the blue outlines at the bottom. On the left is the original (current) shape, on the right is a more approximate shape (I think it might be too narrow down the face though).
Also, something I didn't notice earlier but picked up on doing the diagram; your eyes are slightly too high up. They should be in the dead center of the face (the horizontal red line). The hairline needs to come down a tiny bit, and the widest point of the head should be about 1/4 to 1/3 from the top.

As I said earlier, face should be nearly twice as high as it is wide; my drawing is at about a 1.75:1 ratio because the 2:1 looked silly to me (2:1 may look best, it may not. I'm not sure). The chin needs more pointing; it's too rounded right now and we're shooting for an anime-esque look, as oppose to a chubby kid look (see the blue outlines at the bottom. On the left is the original (current) shape, on the right is a more approximate shape (I think it might be too narrow down the face though).
Also, something I didn't notice earlier but picked up on doing the diagram; your eyes are slightly too high up. They should be in the dead center of the face (the horizontal red line). The hairline needs to come down a tiny bit, and the widest point of the head should be about 1/4 to 1/3 from the top.