Those that apply make up are considered artists and airbrushing on makeup is just another great way that they have found to show off their artistic median. The make up goes on water and has to dry. As it dries those watching can see the transformation of the subject from what she was to what she is now becoming. By taking your time you can make sure that everything matches up the way it should. If you are doing a stencil for say a dog then you would want to take your time and make sure that the eyes were the same size, the nostrils were cut out shaped the way they should be and so on. If you rush you could end up messing your stencil all up. 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. Once you are comfortable using the airbrush then you should work on creating shapes with your airbrush. Over spraying is when the artist sprays outside of the area in which they are trying to spray. When working with nails you do not want to end up airbrushing the person's fingers. So before attempting to do airbrush art on nails gain some experience with airbrushing on larger surfaces. Depending on the type of airbrush art you are doing will determine the type of airbrush that you need. Water soluble acrylic paints are used for airbrushing art onto plastic, metal, vinyl, wood, ceramics and cloth. This makes this type of paint the choice for airbrushing art onto your model cars or airplanes. This is also the choice for airbrushing t-shirts as well. But as long as your project is made from the above material you can use water soluble acrylics for your airbrush art designs. When a person looks strongly at your artwork on the hood of the model car they can really see the capacity of the skills that you have as an airbrush artist. Or imagine that no matter what size your project is, even the fine details are brought out to the point that they demand to be noticed. All this can be done if an artist takes the time to learn micro airbrushing.