Florina Tart is no.10 and so helpful.

Okay, although I bought this series out of curiosity for the translucent ponies and she isn't, this one is still my favourite one of them. Her colour scheme is cute and I don't own a pony with this pose yet. Most of them are only recoloured clones of a handful of basic poses, but she is as unique in my little collection as the princesses.
I do wonder a bit, though, what she's actually doing there. If she's kicking she should be looking behind her doing so. Neither do ponies pee to mark territory as dogs do. So... is she dreaming to be a ballerina, or is she on her way out through an invisible door and kicks it to close, or what? ^^