Nothing, rn!

The mouth should be more square, the colors are off, the outline is waaaaay too thick and the teeth look like triangles. The head should be square, look at refs! THe colors should be browner and the outlines thinner and the teeth should be curved more try making the outline a slightly darker color than the main color

yeah this is supremely better than anything ive ever drawn so maybe just more practice- maybe on ur usually not drawing posts draw if you have time cos it makes good practice-