Princess Upside Down

I think that any kind of imperfect face (one with acne, a wider one, uncommon nose, etc) is often perceived as wrong on things like this.

On the skin color thing, I like how Celestia's nose is a little bit wider. And I think it's actually better to have them with similar faces here- the differing colorings already leaves some visual disconnect about them being sisters. The similar faces really helps tie that related thing back in. ^^