The Golden Rules of Support Play

Support lines and support play
Be confident on the movement of the play. After the pass, anticipate the forward momentum to determine your line. Encourage L-line movements when realigning on attack and defence to help player anticipation. Develop awareness, fast feet, explosive movement to mimic the ball carrier and to get into good supporting trail positions.
Have a simple philosophy, e.g. if you're behind the ball carrier you can't be wrong.