After you have done the other side of the car the same way, it's time for the trunk lid portion. Begin by laying the stripe out on the trunk lid and center it accordingly. measuring the side stripes and placing them will give you the location for the trunk lid stripe. Align the trunk stripe to the side stripes, and mark the edge of the trunk lid on the stripe using the crayon pencil. Now, wet the trunk lid and the stripe and place on the trunk lid. Squeegee the stripe using the same process as the side stripes.