You should always stick with a name brand airbrush when airbrushing. The best name brands to go with are the Iwata or Badger. The Paasche is also a good quality airbrush to go with. You will save yourself money in the long run when using a name brand versus a generic airbrush. When choosing an airbrush compressor keep in mind that put airbrush art onto t-shirts does require a high psi. When you begin you need to place a base coat of Opaque White first before you begin your actual airbrush design. Wood surfaces should be sanded prior to doing any airbrush art. Take the time to use sand paper and lightly sand the wood down by hand. If you are doing a mural on a wood floor then use a hand floor sander. You will need to keep the original design so that you can refer back to it. After you have made copies of your traced design start cutting out the areas that you need to cut out. Then place the home made stencil onto your project and begin to airbrush your project. If you want to use a more durable material to create your stencils you can use the plastic pocket folders. 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. Should these parts become dented or damaged in anyway you should replace them immediately. Damage to the air cap and head assembly will effect the performance of your airbrush. Thus like the needle you will be unable to create desirable airbrush art. Both the needle, air cap and head assembly can be purchased at almost any craft or hobby shop that sells airbrushes and airbrush parts. An airbrushed tattoo will last for 7 days unlike other temporary tattoo that start to come off when you are bathing. It takes time or baby oil to remove an airbrushed tattoo. Tattoos that are done with airbrush art look realistic compared to other temporary tattoos. Henna as temporary body art does last for awhile requiring time and lots of exposure to water to fade and disappear.