Once you understand the different options that are available and the benefits of each option you will be better able to determine which airbrush you need for which projects. For the paint you have an internal mix or an external mix. The internal mix is when the air and the paint both mix inside of the airbrush. Just make sure you do not go any longer than that. 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. Your airbrush will have a handle on which you can hold onto the airbrush with. Airbrush models come with either a solid handle or a handle with an opening. The purpose of this opening is so that you can adjust the needle without removing the handle in a single action airbrush. Most experienced airbrush artists will actually take their handle off so that they can deal with clogging issues without delay. Another great way if you are doing this at home is to allow the design to dry then turn the shirt inside out and throw it into the dryer for about 40 to 45 minutes on the highest heat setting. After this your design will hold up to laundering. If you use a paint that does not require heat setting then you should still set the design. While this is a very primitive method compared to modern day forms of airbrushing, it does still work. Take a look at children's airbrush art kits that require the child to blow through one end of tube to create the airbrushed art. Now ancient forms of airbrush art have bled over to modern day children's crafts. Of course if you are really creative and very good you can freehand the airbrush art right onto the nails. If not then take the time and invest in nail art stencils and masks. The paint that you will use when doing airbrush art on nails is water based. A bottom coat and a top coat are what protects the water based paint from being damaged.