Awesome! You might be able to get that Fantasy Film in different colors, or maybe there's a way to tint the clear version, but either way, it would be worth a shot!
Might want to paint over the glue/tape/what it was that you put on there to make the image flow better. Otherwise, looks good. ^^ ...I'm not a fan of MLP; but I do like how well you made the copper bend to make the pony's shape almost perfectly. Great job!