This is a light made from two glass tiles, the kind you buy at the home improvement store. There is a string of clear Christmas lights inside it. They just lay there. The tile on the back has been drilled so the lights thread through it, keeping the outlet on the outside. You could do it the other way but it would require a larger hole and increase the odds of breaking the tile, the tile will probably crack, but not bad and it is after all the back. The front is any pic you like just mod podge it in place and enjoy the satisfaction of your creativity.