This is my first laptop cake. Bottom layer is a 12x18 and the laptop is a 9x13. The keyboard keys are made from black fondant that I cut out with square cutters. The screen is a piece of styrofoam size 9x13, I wrapped it with foil, glued a piece of black construction paper on the front, and did a screenshot of my computer desktop printed it out and glued it on top of the construction paper. The screen is held in place by 4 dowel rods stuck halfway in the bottom of the screen and halfway in the bottom cake.