Another oldie pulled from the depths of my PC: The RCN Skyraider. No backstory, other than it seemed a logical follow on from (or prehaps replacement for) the Sea Fury. In fact, I think these are Mike Belcher's Sea Fury decals and maybe a spitfire spinner?
I tried a mottling effect with my airbrush, but can't see it on my laptop screen here. Maybe a better monitor would show it. The oil staining is very thin layers of paint blown backwards with the airbrush. Engine exhaust staining was airbrushed on, and I tried to get the vertical ribbed effect seen on some Skyraiders. Those exhaust stains....a great example of adding a little more, a little more, a litt..aw crap, too much! Good reminder to spray, let it dry, come back to it 10 minutes later and evaluate the effect. Paint chips showed a bit more restraint, and were done with a silver berol prismacolour.
Hopefully you can see the mottled effect on the wing here:
