not sure about where you could get a stencil but big daddy roth did so many pics over the years you have plenty to choose from......I am a huge rat fink nut have been since I was around 10 years old. I am an artist on the side and do alot of large scale mural type things never in airbrush though. I use and overhead projector to get the general layout just print the art work out on transparency film and project it and trace out the general outline so the proportions are all correct and I dont run out of room or have it end up off centered.....I picked up the projector for 25 bucks off craigslist.