This will remove the oil that is on the leather. The oil will prevent the paint from sticking to the surface. Make sure that all the leather has been wiped down and that the alcohol has dried before beginning. When you begin you need to place a base coat of Opaque White first before you begin your actual airbrush design. This will create a atomized fine dot spray pattern. This makes the internal mix a good choice for fine detailed work in your airbrush art. The point at which they come together is in the head assembly. The external mix is where the air and paint come together outside of the head assembly or the fluid assembly. Family portraits can be airbrushed over hand painted as well to give for a more realistic painting. The interior of your home is also a place for airbrush art. You can go with a nice mural on your wall to give a room in your home an artsy feeling. Or you can scale it down and just airbrush a border at the tops of the walls. It is at this moment that you realize that you are not able to do what they did. To start with you need to practice with simple techniques until you get the hang of how to do them. Simple techniques will give you a better understanding of the process and allow for you to have a foundation in which to build on. Shanteau offers visual DVD and vhs tapes to help other learn how to create airbrush art on automotives and motorcycles. These videos show you step by step exactly how to do certain techniques to create specific looks. Her series teaches about airbrushing flames, murals and masking techniques and motorcycle gas taking airbrushing. The application of makeup takes time and a lot of practice to be able to do perfectly. The human face is one canvas where an artist does not want to mess up. One must be sure of their abilities with not only the application of the right makeup but also with use of an airbrush to apply those makeups. 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.