The trouble I have with metallic looks is that once it's been painted on, in say an acrylic or spray can, I cover it all in a gloss or satin lacquer to seal and protect it, and all metallic parts lose their lustre. I think my lacquer cans are warm enough, I shake them for ages and apply several thin coats from half a mile away, but it never seems to work. I want to make sure the paintwork is protected during handling. Any tips for a good metal effect that lasts?
Also, how much sanding do you do on these blasters? Are you sanding and colour sanding between coats of paint? Painting in such fine detail such as these has never been my forte, I don't even know how to use a wash. Your paint jobs are the among the best I've seen due to the detail of weathering; you manage to stick with the colour scheme of what should be "original" paint and what should be "worn" paint. Are you using exceptionally small brushes? It's just too good!