The anatomy of Vanellope is very good in this picture, it's amazing. The pose is very cute and you seem to be talented on paint!
You've seemed to capture Vanellope's character, especially in the expression.
Her eyes, her eyes.... They're very good. With the two lighter shades of brown they seem to sparkle! And the hair is amazing, I really like how it looks! Not to be an annoying fan girl but you might need a little more candy in her hair. Just my opinion though.