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Step 1
Start with a clean air gun. You want to leave a crisp black line to highlight your work, so be sure no other colors are present in the gun.
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Step 2
Hold the airbrush approximately 4 to 6 inches from your project and use short, swift strokes to begin your outline. Thicker lines are recommended to highlight borders, while thinner lines are typically used to delineate interiors.
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Step 3
Create extra-thick outlines by airbrushing two narrow lines in black and filling them in. This is easier than trying to create a very thick line in one continuous motion.
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Step 4
Work with a slow and steady hand. Remember that you can go over a line with another coat to achieve the full coverage and depth that your project requires.








