I really love how they look at each other. The picture isn't without problem, but I think you know pretty well what they are ^^'. However, their so much that is conveyed just by their eyes. You see admiration and deep love from Rarity, while Celestia seems a bit more sweet, but also kind of protective. She is taller than Rarity, but also a bit straighter, so I think she is a bit more level headed in this relationship, making it her duty to guide Rarity in what it means to be a royal concubine? But anyway, even with its problem, that is a great doodle =3.