The only thing you need to be doing is experimenting with the airbrush. Get used to how it works and feels in your hand. Practice spraying the airbrush at your cheap surface while you learn just what pressure is needed where. If you are using a double action airbrush you should be experimenting to see how far back gives you how much paint spray. Airbrushing the artwork on took a lot of time out of painting the vehicles over doing the designs by hand. Thus airbrush art was being experimented with on vehicles at this point. The way we use airbrushing now to create art surly has come along way from the primitive methods used by our ancestors and even our parents. Depending on the type of airbrush art you are doing will determine the type of airbrush that you need. When doing airbrush art on nails go with either the Iwata HP-A or the Iwata HP-B. These are great for airbrushing nails. Even if you do not go with the Iwata though remember to always go with named brand and never use any knockoff airbrushes. The trigger will control the air and the amount of paint that comes out is determined by the needle adjustment on the back of the airbrush handle. Dual action is when the trigger on the airbrush controls both the air and paint. The trigger is pressed down for the air and back for the paint. Now when it comes to the feed on the airbrush there are three types of feeds that you can choose from. 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. Thus like the needle you will be unable to create desirable airbrush art. Airbrush Art On T-Shirts Putting airbrush art on T-shirts can be a fun and creative hobby. For those that want to take it a step further it can also be fun and exciting business. T-shirts containing airbrush art are popular and unique to wear. What makes airbrushed t-shirts so unique is that one of a kind images can be created giving the wearer a shirt that no one else has.