The bottom feed is where the cup is mounted to the bottom of the airbrush and the paint is brought up via a siphon tube. It is for this reason that the bottom feed is also referred to as a siphon feed. Since the artist can attach the cup to the bottom of the airbrush the colors can be changed quickly by using different cups prefilled with the colors needed. How To Prepare Various Surfaces For Airbrush Art When you begin an airbrush art project, you will first need to prep the surface. The prep work that you do will be determined by what type of surface you will be airbrushing. The prep work to the surface will ensure that the paint sticks to the surface and that nothing is interfering with the airbrushed design. The best airbrush to use for putting airbrush art onto an automobile is a gravity fed airbrush. This is the one that professionals use and will give your artwork a high quality look. The paint can be automotive paint but make sure that you use a well ventilated area as the fumes can pose a health hazard. These are advanced techniques and will take you as an artist to the next level of airbrush art. Another way an artist can learn micro airbrushing is to work directly with an expert. Take on a workshop that teaches micro airbrushing and you can learn with some hands on projects under the supervision of an expert. Airbrush art is also available on fake nails and are sold at almost every store that carries fake nails. You two can get in on this craze and start you own fun and exciting business offering airbrush art on nails. Airbrush art on the nails is not for the beginner just getting started in airbrushing. The work area is very small and the artist has to have mastered the techniques involved with airbrushing. Always keep the iron moving though so that you do not burn the material. 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.