This was the result of losing a bet with a brony friend, who then decided he wanted me to make my next Peace Crusader model resemble something from MLP. I had a pretty good head that I was waiting to use for a while, and which was rather suitable so I went ahead and did a Twilight Sparkle Librarian. Ironically it looks like something that would have fitted in my brightly coloured force anyhow so it all worked out pretty well in the end.
As for details, the head is the main thing to note here. I tried my best to show in the pictures, but the hair is a reasonably good match to the character it was based on, and the little Tiara of Psychic annihilation (I think it was a Space Wolf head to begin with) isn't too disimilar to her Element of Magic so I went ahead and tried to make that match as well. The tabard is painted in her colour, and I also went ahead and threw in a decapitated Chrysalis head because why not (Emperor bless ye Grey Knight bits).
I really tried hard to thin my paints out again, going with multiple watered down layers but I'm pretty sure that failed miserably. So yeah, that's pretty much all I have to say about it really.