Wasn't happy with my first attempt of this, so here is a stained glass for Celestia using official character pictures that I altered a bit. Also with marbling and detailed shadowing.
Inspired by the Stations of Awakening from Kingdom Hearts.
My Little Pony: Friendship is Magic copyright Hasbro and Lauren Faust I think.
Kingdom Hearts copyright Square Enix and Disney.
Original attempt: [link]
Marbling achieved by this brush set: [link]
Other Stained Glass Windows by me: [link]
I entered the first one in a tee design contest. If I understand the conditions correctly, I have to alter the design so it doesn't use the pony creator that I used. So this will be what actually goes on a tee shirt!