Origami crease patterns serve many purposes: to the designer, they provide a structural representation of the artwork. To a folder, they can provide signposts on the way to a fold. To the everyday viewer, they provide an alternate way of looking at the folded subject: in a crease pattern, you can see everything that is hidden in the folded work. This page shows many of my own crease patterns. For more of my thoughts on crease patterns, see here and here.