honestly Du do need to work on anatomy, arm length and legs. It's a great start though, Du can only improve just remember that and keep practicing. Du did a good job on the face and hair though ^^. Yes I would say Du need to work on detail but I would worry about detail Mehr after perfecting the body shape, anatomy, etc. But yeah for just doodling it looks really good keep going! I like the hair, Du did a good job on the bangs and adding detail to the bottom of the pig tails!
