I think it's great! I thought it looked like ice cream that she's lying on. I loved this drawing so much, I used it as a reference to draw my own. ^_^ Yours is better. P.S. I like the background. It's simple yet cute. I just did a plain, solid color on mine, so you can do backgrounds way better than I can. I didn't even try to do something like that.
Hahaha I love the attitude in this piece, so fitting of her character! That face has so much win in it. I like the sense of depth caused by the folds in the fabric hiding small portions of Vanellope in the foreground. I think the coloring for this piece is beautifully done, It's not over or under done and gives the piece a soft feel because the colors seem pastel like. What reakky makes this piece for me is that face showing off all her attitude and character. Excellent job!