i am so into modeling now

One of the things that concerns me is that the solvents that are used in current day automotive paints might craze the plastic. Back in the day, we tried lacquer with bad results. The car looked like it had been in an I-5 pileup. The other thing we found out is that putting prototype paint on a 1/25 scale model put paint on that was 25 times too thick. The nice thing about automotive paint is the ability to color match is 25 times better. The majors have the Mopar palettes figured out well.

We found best painting results using an air brush. Badger, Binks, and Paasche were the guns of choice. I wouldn't be surprised if they had these things with gravity feed. (If we'd had game, we'd have figured out you can run make up through these things and the possibilities of working with the ladies .... )

I recall that we hooked an airbrush up to a spare tire as an air supply. Worked well. We found that using the spare as a storage tank with the air compressor gave us a very stable air supply.

The model railroad bunch has got weathering down pat. Model Railroader runs good, well illustrated, how-to articles on the subject. A good hobby store will carry the magazine. As for paints, Pactra, Testors, Floquil, and Tamiya are good brands (IIRC). My A4 66 Dart used seven different pigments in the PPG paint we sprayed on it. I wouldn't have the foggiest notion how to blend a good A4 in Testors, were I to build a replica of the car.