Photography literally means "to write with light." "Photo" means "light" and "graphy" means "write." This is technically what transpires as you open and close your shutter, sucking light into or out of every corner of your image.
In the case of Lola Rain and Cupcake play with sparklers, we were writing with light on both sides of the camera lens. We had originally planned something very simple for this shoot, but once we lit up those sparklers there was just no stopping us (we're talking close to 2 hours). I so love anything in life that causes you to stop everything and just PLAY. I would never want to live without my sacred quality of playfulness.