You are trying to create a new form of art and are finding that some things may be a little difficult to get to happen. The experts showing you how to do something on a video make it look so easy. You will believe it is easy until you get out there and try to do it yourself. It is at this moment that you realize that you are not able to do what they did. Most artists find the using their airbrush without the needle cap gives them more control. Removing the needle cap is fine but should you hit your airbrush against something or drop it you could end up damaging the needle itself. So to take care of your airbrush make sure that when you are not using your airbrush that you replace the needle cap back onto it. 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. You will also need to spray a light coat of what is called varnish between the artwork and the top coat. Varnish is just a water based clear coat that will protect the paint from getting brush strokes when you apply the top coat. 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. Sometimes you just need to step back and take a breather to get your inspiration back. If you find that you are not getting inspiration no matter where you are looking then it is definitely time you stepped away from the airbrush art for awhile. Take a few hours to do something other than airbrushing and let your mind go for awhile. 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.