While the book will teach you some intricate designs do not worry though cause the book, also has some simple projects that you can start with when working with airbrushing motorcycles and cars. If you are at an intermediate level with airbrush art then The Ultimate Airbrush Handbook by Pamela Shanteau is for you. Using a cheap surfaces airbrush circles, triangles, squares and rectangles. While this may seem stupid it will help you to learn how to create designs using your airbrush. Continue to practice with shapes until you are able to perfectly render airbrushed shapes. Once you have the ability to render the shapes, you can move on to rendering shapes in different textures. PSI stands for pounds per square inch and for automotive airbrush art you need a compressor that has a psi of 55-65. Iwata is a great name brand to go with and they offer four compressors that will work for airbrushing automotives. Badger is another good name brand that you can go with. They offer several air compressors that will work when doing airbrush art on automobiles. Take the time to submit several pictures of your work to several website airbrush art galleries. Don't depend on just a couple of pictures on one or two sites to get you known. Myspace is also a great way to get seen and gain some exposure. With myspace you can create a profile that is dedicated to you as an artist. Once you are happy with it then airbrush it on to your project to create your own unique airbrush art design. If you don't want to get outdoors to look at new scenery and you don't want to go to the library then you can just surf the web. The internet if full of inspiration for your airbrush art. Start looking at various images and keep surfing until you find the one that gets your creative juices flowing again. One the stencils can start to get expensive purchasing. Secondly you are limited to only creating designs based on the stencils that you can get your hands on. While these stencils can greatly aid you in your airbrush art, they also can hinder your creativity. So the best way to deal with having you use stencils and reduce costs as well as leaving your creativity open is to create your own stencils.