Because I love Luna. Even more after the latest episode - for personal reasons which I won't go in detail for. Let's just say that when I see people compare Luna to an over-dramatic emo I just roll my eyes now.
MLP and Luna (c) Hasbro
Image (c) DogiCrimson
PS, I'd appreciate if people that want to get this on their blogs would reblog straight from my art-blog ;) You can find it here. Not mandatory, just ya know. Feels nicer and all.