When the CA has cured, trim the front of the tool to match the blades. You can cut simple pinstripes using a straightedge as a guide. All stripes will be the same width as the tool, so matching is easy and accurate. Odd shapes, such as circle and star outlines and wide, curvy lines, can be cut around templates. It is important to hold the tool so both blades cut the film at the same time.
Simple outlines become interesting trim with little effort.