Oh I absolutely love this!Your 'Frozen' fanart are so amazing, my only critique for this would be for Elsa's skin being a bit too tanned for her, but other than that, this whole drawing is adorable. Also you're not alone when it comes to character heads' appearing big compared to the bodies. I make that mistake too sometimes and I always blame it on how I drew the hair, if I had drawn it with less volume than maybe the head wouldn't appear so large XD But you can definitely get away with it here, Anna and Elsa are beautiful!