its looking surprisingly good for the materials used, im quite impressed, what sort of machines do you have access to? or is this using the old hand-o-matic? also with your primer layer, youd be much better off using very light short sprays as opposed to blasting it til its covered, using light sprays you can avoid the unsightly drip marks, also, personal preference, but grey is a better colour for primer at this stage, it shows up more imperfections leaving them easier to fix. otherwise good work.