In the book I'm following, 365 ~ Make Something Every Day and Change Your Life, the author, Noah Scalin, shows an example of his pop-up project which is a human skull. This gave me the idea for the horse head, including the lighting for photographing it. I cut it out of a piece of 81/2X11 card stock and backed it with the same. It helped to score the folds, including the ears, with a book maker's scoring tool. I made a few rough tries at this with regular bond paper before getting it to work the way I wanted it to.