overlapping geometric figure lesson

Remember this lady?

Well she inspired a whole lesson we're trying out with the high school students I'm working with. We're calling them action figures, inspired by sports-figures in magazines, traced, filled with geometric shapes, then repeated and overlapped for watercolor washes and transparencies. Here's the exemplar I made:

It's a pretty challenging activity for them, but I'm hoping it will help them understand how figures can be drawn through geometric shapes, and improve their watercolor technique. Lots of the kids work with the watercolors like gouache and don't exploit it's more watery nature.
Crossing my fingers!