I was reading up and I decided to use SNJ metal finish. I spayed it on a old model that I screwed up when I had no clue how to glue. Anyways I am very pleased with how metalic and smooth it looks but I think, for my P-51, it needs to be shinyer (I don't even know if thats a word). I think there is some sort of polishing powder. I don't know if I can use fine grit sand paper or if I need to use some sand paper.
Thanks