Any damage to your needle can cause very bad paint spray patterns. It is important to keep your needle from getting bend and either straightening the needle or replacing the needle. 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. With the time and cost of creating great realistic airbrush art tattoos one does not want it to fade within a couple of days. While an experienced airbrush artist may know this a beginner may not, so it is worth mentioning. When doing airbrush art on skin make sure you are using airbrush paint that is designed for the skin. This will remove the oil that is on the leather. The oil will prevent the paint from sticking to the surface. Make sure that all the leather has been wiped down and that the alcohol has dried before beginning. When you begin you need to place a base coat of Opaque White first before you begin your actual airbrush design. When doing airbrush art onto t-shirts as a business then invest in a commercial air compressor. It will be worth it in the long run. Most of the times you will need to heat set your paints so that they can be washed without fading or bleeding. There are a few ways that you can heat set your airbrush art onto the t-shirts so that it lasts. Airbrush art can just be wording that you have added to your shirts or other clothing or it can be creative pictures of things that interest you. Either way you are guaranteed to have clothing no one else does if you add your own airbrush art to them. Automobiles and motorcycles are another areas where airbrush artists can get creative and create masterpieces. Airbrush art can also be applied to the body to create temporary tattoos and thus uses the human body as a canvas for an artist's imagination. Cigarette lighters are also being used as a way for artist to show of their airbrush art. The once simple looking lighter is now a display item with awesome art on it.