So, here's a very old Tamiya StuG IV kit of mine, painted with my lovely Testors CO2 powered airbrush. I painted it in an ambush scheme with the smaller Y blotches, the names and the IV inside the tactical sign being done by hand.
This was one of my first forays into airbrushing the ambush scheme, and basically put it in a base coat of dark green, then added the red brown and dark yellow afterwards. It's a bit dusty because it's been sitting in a shelf and in a box for at least 7-8 years