nice work !
I have a dual action brush and mini airbrush compressor, tried it once, but didn't have your patience to spread it over 3 weeks ! ...LoL more like one day was long enough.
You gave me an idea on how to speed it up, I will use a toothpick to level out the paint since this is faster and then sand and use the airbrush to give it the finishing touch with the metallic look.