I'm running an art challenge called "In the Style of Me" www (dot) inthestyleofme (dot) com. Basically the challenge is to create art inspired by famous other artworks, but in your own style. I'm running this all year and at the end I hope to publish a book. It's entirely not for profit, and just for fun.
I hope you can join in!
sorry I can't post a URL but apparently I haven't posted often enough in this forum.