You're BACK! & in black at that! great build, black is truly one of the hardest colors to get "right" even in full scale. I learned a tip from a
"master painter" when I was doing the full size cars that works well on our "babies" not only on black, but best on solids {not metallics/pearls). After you get a good coverage with the main color, make each following coat with more thinner, less color, & add clear, then add the last couple of passes with clear & thinner to get a surface you can polish. This will result in those three foot deep paint jobs, works especially good on Blank & Red.