For our commercial photography class, one of our most recent assignments was to shoot something using a "cookie" light (the real term is “cukaloris”). Basically it's a type of gobo, which is when you use objects, shapes or cut-outs and put them in front of a light source to create light or shadow shapes on your photograph.
For my photograph I cut out stars from bristol board, painted a few small styrophome globes and hung them, and included a little space man named Sam. I had a lot of trouble making the stars look sharp, and they kept doubling. It was pretty bad, that I actually blended two photos together to make the stars alright (this version) and in the photo above, I actually had to align and erase some of the stars in photoshop.