What is the correct sequence of steps to paint a line with the airbrush? First, release air Second, gradually release the trigger to let the paint...

What is the correct sequence of steps to paint a line with the airbrush?

First, release air
Second, gradually release the trigger to let the paint flow
Third, press the trigger to reduce the paint flow
Fourth, continue through the page
1, 2, 3, 4
2, 1, 3, 4
1, 3, 2, 4
2, 3, 1, 4