The technique is to have an outline of the separate piece you want to engrave or cut on. That that outline is a distinct color. First cut out that shape. Make sure your engrave design is place within that outline. Cut the design first in cardboard that is affixed to the crumb tray so it doesn’t move. Cut out the outlines first. The remove the cutouts. Put your pieces in and then ignore the cut outlines and then engrave the pieces you want art on.