First, you go to colAR’s web site and print out your coloring page of choice (the free app usually comes with one option included and a few others available for in-app purchase, but their full catalog is free until July 28th)… Once you’re done [coloring], pop open the app, and hit the “Play” button to bring up a camera view. Hold your drawing up to the camera, and bam! It takes your work of art and wraps it around an animated 3D model.
If only one could draw a Centrifugal Bumblepuppy in this thing, it would be perfect. (Or my head would explode. Or both.)