Im painting my car with murals. I am just using acrylic. I was going to seal it later. The thing is, i messed up and i had to strip off the acrylic, but the car finish came with it. (this is an old old car, that is pretty beat up.) We live in a snowy town, and now my mom is worried about the car door getting holes in it from the rust. I dont know what to do! i need to fix it please tell me how! thanks