This is cute :).Hmm....well, first thing would be to have more confident lines.If you have trouble with good lines, do what I used to do which would be drawing with a thick line and erasing and molding it into the line you want :).And I'm assuming you're going for an anime look, so I can't help you there :(.So yeah, confidence in the lines and it'll look even better, I promise ;).Good luck with this^_^.