There are a few things you need to do in order to make a sunshade for your car. First, you will need to find a piece of cardboard that is at least 2 feet wide and 1 foot long. You will also need some pieces of wire or fabric that is at least 18 inches long. You will then need to cut the cardboard into small squares and then cut the wire or fabric into small squares as well. Finally, you will need to place the sunshade pieces on the front of your car.