not sure this will be easy, but it should be dead on
Measure the diagonal distance on the panel of your project from the top left corner to the bottom right corner, and then measure the same distance from the top right to the bottom left. Measure the diagonal distance of the badge, and subtract it from the two measurements taken above (giving you two new distances). Divide each of these distances by 2, and then take a ruler, measure this distance from the corner with a ruler (line up both corners with the ruler) and mark a dot at that point. Repeat this from the other corner, and then the other 2 corners. This will give you four points, which will be the outside corners of the badge. Line up the badge so that its four corners touch the four points, and it's there. Hope this helps!
Dave