Stripes should start at the bottom just about a 1/2 inch forward of the rear bumper pockets so that it ends up about 2" away from the rear marker lights. Remember to lay it out in its entirety and tape it in position (or use magnets) before you start to apply anything. Measure the distance on both sides of the trunk lid at least twice to make sure you are square. Then, do the trunk first. That way if you are a little off, you can compensate with the sides. If you start on one side and go across, being 1/2" out of square could lead to big problems on the other side.