There are a few things you need to do in order to attach a flag to your car. The first is to find a flagpole. There are many different types of flags, so it will be important to find one that is the right size and has a pole that is long enough. The second thing you will need is some adhesive tape. You can buy it in most stores or online. Once you have the adhesive tape, you will need to cut the flag into small pieces and place them on the pole. Finally, you will need some screws in order to hold the flag in place.