If you cant recognize the school uniform Helga's dressed in then you dont know squat about hentai.
If you do know then you can guess what that paper doll she's created is for.

I got the idea for this one from 4chan where some one had posted Clover from Totaly Spies in the uniform, had to have a try.
It as a few hours work on photoshop from sketch to colours all in one long sitting.