The last step for me in this process was to try out rub and buff on the panel. It obviously worked extremely well. I did not try painting as weather has not been permitting me to do so. I did test out trimming with primer, Paint and airbrushing with good results. I would highly suggest rub and buff, along with fine airbrushing. You can easily do a fast, simple rub and buff coat, not worrying about the cracks and gaps. this adds to the illusion of depth and works like drybrushing.