I spent a long time trying to come up with a background for this, but in the end, the best thing I could do was nothing.
This took me about 6 hours to complete, with no breaks.
I used Paint Tool SAI for the painting, and I used Photoshop CS2 for the little glitchy look at the bottom.
My Little Pony: Friendship is Magic belongs to Hasbro
and was developed by Lauren Faust