If the wood has been waxed or has a gloss coat then sanding this will remove this and allow for the paint to stick to the surface. Skin should be cleaned with rubbing alcohol to remove any oils from the skin. The skin's own natural oils will prevent the airbrush paint from successfully sticking to the skin. Whether you are reading and learning more about airbrushing in a printed magazine or an online magazine you are sure to gain knowledge of the airbrush art industry. Airbrush art can be seen in magazines that are designed to teach techniques geared toward airbrushing in a more broad-spectrum. Airbrush art can also be seen in magazines geared toward airbrushing cars or bikes and such. If you do create your own stencils for airbrushing your automobile do not use paper to create your stencils. Automobiles need lots of paint and this will damage paper stencils rather quickly. So stick with plastic or vinyl material for your stencils. A great cheap plastic to use for stencils is thin plastic folders. This kit includes a 4 outlet air manifold, 4 single action ABA airbrushes, 12 glass airbrush bottles, 4 air hoses, 10 60ml of airbrush art tattoo inks in white, blue, red, yellow, violet, fuchsia, green, fluorescent green, fluorescent yellow and fluorescent blue and 1 120ml of black airbrush tattoo ink. Once you have the ability to render the shapes, you can move on to rendering shapes in different textures. This means that you should work on creating shapes with thin lines and shapes with thick lines. This will help you to learn more how to use the airbrush to render broad designs as well as fine detail. 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. Airbrush art also uses airbrushes with a side feed. The side feed has a cup that mounts on the side.