Some time ago I bought a Hotwheels 1:18 Ferrari Testarossa, but the paint of the car had a problem: it had that layer that makes the paint shine (I don't know how it is called in English, sorry) damaged. I tried to fix it using Acrylic Wax on the car, but it only got worse. What should I do now? Remove the Acrylic Wax? How? Or is there other and easier or more effective solution?