If you're familiar with PreCure, I made up some Cures for an original series called [url=http://benit149.deviantart.com/gallery/41220052]Sparkle Precure[/url], although it was originally intended to be a tad darker than the series. I have the main characters' names, powers, and personalities made already, as well as bits of the world they're in, if you don't want to go through the trouble of making new characters up.

EDIT: More images can be found [url=http://www.pixiv.net/member_illust.php?mode=medium&illust_id=38660312]here[/url] and [url=http://www.pixiv.net/search.php?s_mode=s_tag_full&word=%E3%82%B9%E3%83%91%E3%83%BC%E3%82%AF%E3%83%AB%E3%83%97%E3%83%AA%E3%82%AD%E3%83%A5%E3%82%A2]here[/url] (NSFW).