On your pumpkin, the dark line creases in the pumpkin shouldnt be the same color on the entire pumpkin. It should follow just as light source should. In other words it should get lighter as the main light source gets lighter. Otherwise, it looks odd with a very dark crease in a bright area. If anything, put some empty spots in the light areas of it (meaning it shouldnt be a solid line.)

But I like it. Cute animation too (: And nice palette you used. But just a little advice from me to you to help improve.