so cute!!! I love her design <33 I used to play Neopets, but I've forgotten my password v____v
Anyway, since it is somewhat SD style, I don't know what to critique because some of the things are just part of your style, so please don't be offended if I mistake a stylization for a mistake >__<;; In addition, I'm not perfect myself, so don't take a lot of what I say seriously.

Overall, I think you have a good eye for the flow of hair. The only mistakes I could see were her shoulders, which sloped down a little too much (imo) and the position of her arms. Don't try to hide her arms like that just because you don't want to draw her hands!! This is bad for you for two reasons, one, you are losing a chance to practice how to draw hands, and two, you're restrained to some pretty boring poses if you hide the hands. Don't hide hands like that.
Uhmm, I gave her more of a ribcage in my redline. There were just small things like cutting off part of the head, and ribcage.
I wanted to draw in a suggestion for the other arm, but I wasn't sure.
I'm sorry if I was too nitpicky!! I think that overall, she looks like a great character and you have a good idea of form so far. I'm sure whoever you're thanking will be thrilled ^^