Shadows

Your next challenge will be to play with light (or the absence of light) in the form of shadows.  There are no other caveats, other than trying to create really well-composed and thought-through photos, not just snapshots. These images should reflect deliberate photo-making and all aspects of the image plane should be considered, backgrounds included. Of course at this level, focus, contrast, etc. should be non-issues.

Here are a couple of interesting shadow photos, but there are thousands on the web, so take some time and visit some sites.