Make a custom-fitted sunshade

Step 5 Position template

Now place the template on top of the flattened sunshade. Make sure it's centered and the top portion of the template is at the top edge of the sunshade. Move the template around to get the best coverage. Areas where there is paper with no sunshade underneath are going to be gaps in coverage. I favored the bottom edge a little more for two reasons: the sun visors can fill in a bit at the top, and my car has a "lip" at the inside bottom edge that the sunshade can engage for a good fit. Once you've got the template where you want it, pin it down with something heavy to keep it from shifting around.