The air cap and head assembly are on the front of your airbrush and they cover the tip of the needle. The purpose of these parts is to control atomization of the paint spray. Should these parts become dented or damaged in anyway you should replace them immediately. Damage to the air cap and head assembly will effect the performance of your airbrush. Airbrush Art On Automobiles By airbrushing art onto your automobile you can create a unique paint job that really shows off your style. Once you have the basics down on how to work the airbrush then you can pretty much create some great airbrush art on your automobile. It does not matter if you can draw or not. Advanced Airbrush Art DVDs Once you have learned the basics with airbrush art, you can start to learn more advanced techniques. These advanced techniques will help you to render more imaginative art. Videos can help you learn this advanced airbrush art techniques. You can also get videos that will help you learn how to render a specific design that will fit with the airbrush art you are trying to create. Take a woman who has flawed skin and airbrush a light foundation onto her face and you now have a woman with perfect skin. The great thing is that the foundation is light weight and barely noticeable. Airbrush makeup has been able to take a woman that is plain and turn her into an exotic beauty with the right application of certain makeup. Derive inspiration from various sights around you and incorporate them into one great piece of art. See two kids on a seesaw at the park? Turn those two kids into angels on a seesaw cloud in the sky. See a couple of kids playing ball? Then turn them into angels and the ball into a cloud. Now put all of this into one art design. This video is intended for beginners to learn first how to construct an airbrush and also for cleaning purposes how to take the airbrush apart. Cleaning the airbrush is covered in this video as well. For the actual creation of artwork you will learn about the dagger/flare stroke, styles and basics on lettering and color theory.