Put the rivet in position and squeeze on the rivet gun handles until the rivet shank breaks off. Insert your pop rivet into the rivet gun and align the holes on the license plate with those on the license plate holder. The size of the bit to use should be the same as the size of your pop rivets. If your license plate does not have holes that align with the holes found on the plate holder, you will have to drill it using an electric drill. Mark their positions on the license plate as well. There are other styles of license plate holders that may have attachment holes on other parts of the frame. Mark their positions on the license plate. There are usually two holes found on top and bottom of the holder. Once the license plate is removed from its mount, slide it into position inside the holder. Remove your license plate by locating the two screws that are on top of the plate and unscrewing them with a screwdriver.
Most jurisdictions require a front and back license plate but it is safer to check first to avoid incurring a violation. Before installing a holder for a front license plate, check with the Department of Motor Vehicles office locally if you are required to have a front license plate in the state you are in.