Very cute, but I'd advise that if you're going to put in the effort to make a larger sprite of the character, you should also put in a little bit more with shading, details and generally adding to the character's personality. Consider the outfit or facial expression in the characters official artworks and try to implement some of that into the sprite.
Here's what it looks like: http://www.hapshack.com/images/sSEcd.png
I prefer the first version finally :b