It's a verry good start! ^_^
Manga (it's only called anime when it's animated - like in a movie ^^) is all about exaggerations. You're suppose to portrai reality in an as simpilyfied form as possible. The more correct, and the more simple - the better ^_^

It's hard - and you show some typical signs of a begginner manga artist, but you've got talent.
Keep it up. Study others and you'll do great!

Good luck!