When you take it apart to clean soak it in a commercial grade cleaner overnight. The next morning take an airbrush cleaning brush to it. Make sure to oil your airbrush up before putting it back together. Most artists find the using their airbrush without the needle cap gives them more control. Removing the needle cap is fine but should you hit your airbrush against something or drop it you could end up damaging the needle itself. Stencils can be used to airbrush art on to your automobile just the same as any other surface or project. The art that you create with airbrushing is only limited to your own imagination. There are plenty of places to acquire stencils or get design ideas so that you can create your own stencils. If you do create your own stencils for airbrushing your automobile do not use paper to create your stencils. Both the needle, air cap and head assembly can be purchased at almost any craft or hobby shop that sells airbrushes and airbrush parts. The airbrush trigger is what allows you to actually operate the airbrush. In a single action airbrush the trigger controls the air flow. In a dual action airbrush the trigger controls both the air flow and the paint flow. Can the application of makeup with the use of an airbrush be art? Or is it still just the application of makeup that just happens to use an airbrush? When looking at what airbrushing does when used to apply makeup, a lot of people do believe that this is a form of airbrush art. When make up is airbrushed on the effects of what it does to the subject can be really drastic. The 1960s brought us even closer to what we now know we can do with airbrushing. Airbrush art in the 1960s made its way into the music world. Album covers were done using airbrush art to create the whole hippy style images. The wild psychedelic artwork that was popular with that era were done thanks to the use of airbrushing. The magazine has full color images and is full of artist stories and how to articles that will help any airbrush artist. Air Brush Action magazine is a publication on airbrush art that seems to have specific main niche for each publication. While each issue may include some other forms of airbrush art, the issue has a main theme throughout.