How to Airbrush Tattoo
(This is a guide only, it is up to you to do your research and decide what is best for you).
To start practicing yourself get a sheet of paper and airbrush dots onto it as shown below. Try to make nice round uniform dots, not spats.
Once you have mastered painting dots, start practicing straight lines without creating a dot at the beginning and the end of the strokes. Move from left to right keeping your wrist locked and move the airbrush with your ahnd and the whole upper body keeping your wrist locked. Use both hands to steady the airbrsuh as you move. Start to move the airbrush with just air coming through and apply paint after starting the movement from left to right. Paint being released when you gently pull the trigger of your airbrush back. When you are finished stop the paint flow near the end of the line and continue across tot he right extending the line with what paint is left.
The width of the line will be affected by how far from the paper the tip of your airbrush is. The closer to the paper the small and thinner the line will be the further away it is the larger the line will be.
To draw thick and thin lines start close the the surface of your paper allowing a little paint to be released. Then gradually release more paint and bring the airbrush further away from the surface. Again keep the airbrush moving until stopped.
Using a left to right and right to left movement try to achieve a gradual tone also known as blending. Start by applying an even coat of paint by releasing a fair amount of paint. Keep a distance of about 20mm for the surface of your paper. The further down you go, move further away from the surface, applying less paint and overlapping the spray by about half as you move down the page. Each time apply less and less paint as you go. You should have an even finish with no pattern lines.
Similarly, you may use a similar technique to gradual tones where by instead of varying the flow of paint and distance from the surface you continue with the same amount of paint for each stroke. Keep each stroke overlapping by about a half.
Remember it is all practice, practice, practice which will help you improve.