I'm still trying to figure out how you capture that sparkle effect...do you use that salt technique for your paintings? I'm not an MLP fan, but this is still a nice piece! Everything has a sort of rhythm to it--from the pony's curly mane to the designs on the floor, and even the feathers.
And lastly, if the cat's expression wasn't so funny down there, I'd almost feel bad for her (or him?). XD
Beautiful, beautiful work, and the fact that it's traditional media just makes me love and appreciate it even more. I'm so happy that you included Opal as well, she looks so adorable sulking in her pretty outfit!