If you are able to keep your feet still, get as close to the line as possible. It doesn t matter where you stand or if you jump or not. The goal is to make the shot from behind the line. There are no extra points for style. Have a routine for bouncing the ball.
Some people like to bounce it three times.
Some bounce it five. Some don t bounce it at all. Whatever you do, be consistent each time. The more consistent you are, the more comfortable you will feel each time you step to the line. Ignore everything and everyone around you.