Actually, I think these two could team up like Superman and Batman, which means surprisingly well.
Let me explain, Twilight Sparkle is a master of spells, but she tends to do a lot of things literally by the book. This can tend to give a cold, calculated, and ultimately boring personality. Boredom certainly isn't a problem for Trixie, but although she is at least somewhat gifted at magic, she has a problem with her ego. She also isn't as gifted as she says she is. So with her showmanship and charisma, Trixie could lend Twilight some creative energy, while Twilight could teach Trixie some advanced magic spells to back up her claims better.
Just don't think they're going to get married though.
I like the posing and the perspective in this picture. My only problem is that Twilight's head seems a little thin, and both their heads are a bit for their bodies - broadening their shoulders would help in that regard. However, your coloring is very nicely done, and your style of shading is very interesting. I also really love Spike's expression. Overall, not a bad job!
well, Spike was kind of a whinner durring the ep. So he can live with ponies like Pinkie and RD, but he can't stand three minutes with a pony whose job it is to hype the crowd, no matter how far from the truth the motive is?