I would recommend Meguires Show Car Glaze, its a pretty mild polish. Do not apply in a circular motion, this creates swirl marks in the paint. Apply the way that the wind travels over the vehicle, IE: a front to back motion. After polishing the area use a wax to protect the finish. Before doing all of this make sure the vehicle is very clean, or you will scratch it more. Also, do not set any of your applicators on the ground or they will pick up grit and this will scratch the vehicle. Just be methodical about it and you should be good!