Eric Bradbury glides through the air on his tree swing, as his shadow follows his every move (© Michael Maher, The Lowell (Ma.) Sun).
When I saw a boy playing on his tree swing, I noticed how the bright sunlight left a clearly defined shadow on the ground under him. To capture the shadow I needed a high vantage point, so I climbed the tree above him and his swing. Now I could shoot down at the shadow and the boy on the swing. I made the shadow the central focus of the photo, with the boy and the swing secondary-- the opposite of a typical photo where the subject is central and the shadow secondary. The image came out wonderfully, and I learned the value of finding unusual ways to employ shadows in pictures. This is an example of a photo where the unusual perspective made people wonder where I was standing when I took the photo.
1) Using shadows creatively will make unusual photographs.
2) Try making the shadow the primary subject of the picture.
3) Use a high angle for a shadow on the ground, or line the shadow up against a wall background.