I had the oportunity to try out airbrushing at a friends place for the first time in my life in march last year. So here's a couple of pictures of my first stapling steps with an airbrush. I did know beforehand that the result wasn't goin' to be ok so I took a scrap model that I've used to try out other things before, mainly if it was possible to make zimmerit with the putty I've got and no it wasn't possible due to the putty dryed way too fast for me. Everything is done freehand by me and here's the result below.
As a fotnote I can say that I don't think that there's a M113 A2 FSV out there with zimmerit and German WWII three tone camouflage.
So please go ahead and give it a laugh!