Diamond Tiara's Secret

Well, to start with, I'd like to say that even forgetting your other MLP FIM work, you are very skilled at this, and it shows in this picture. Everything looks like it came off the show, I can't see any sorts of errors or mistakes in the drawing, which is why you get a five for technique. As for Originality, well, the idea your going with it is original, I'll say that much, though Diamond Tiara being in a bunny suit like that isn't ever since the Family Appreciation day episode, as I've seen several of those scattered around the interwebs.
Now, for the two I'm gonna have trouble with.
Vision wise, It defintively conveys to me that Diamond Tiara is secretly nice. If it wasn't for Featherweight over there, she'd be all alone and no one would be there to criticise or make fun of her, something I'm sure she wants to avoid at all times (You can bet if she knew he was there she'd either be tearing that suit off in a hurry and abusing the rabbits, or running for the hills. Or maybe not...this pic just gave me an interesting idea for a shipping fic <img src="e.deviantart.net/emoticons/b/b…" width="15" height="15" alt="" title=" (Big Grin)"/>)
As for impact, it didn't impact me strongly, other than it being a really awesome piece and the idea being original. Its certainly amusing to think of the sort of reaction Diamond Tiara might have if she learned he had seen her like that.

Overall, this is a great image, and personally, I'd love to see a continuation of this image, similar to your Discords Revenge series. You could go all sorts of interesting directions with a continuation of this image, if you so chose.