We have one of these and someone put a piece of a popsicle stick and wrote "Rock Concert" - Love Rock Art.Garden Trinkets - Awesome Ideas, Projects and Tutorials! Including, from 'instructables', this creative 'garden thing' project with rocks.
Silhouettes are amazing, and I love the three deer (three is a magical number). I also love the light rays making it look early in the morning and giving the dusky feeling. Making the picture black and white was a good choice.