Leather onlays can be one of the most effective ways of decorating a leather binding, whether as a direct onlay after the book is covered, or as a back-pared onlay before the leather goes on to the book. However, cutting out detailed or complex designs in thin leather can be awkward. This simple method of cutting out onlays was first shown to me by Paul Delrue, and it is an approach I use frequently. I hope you find it useful!