The document provides instructions for performing a long serve in badminton. It describes the proper stance, grip, and motion for the serve including a pendulum swing, shifting weight to the front foot, and snapping the wrist on contact to send the shuttlecock deep into the opponent's court with good form at least 75% of the time. Common errors like swinging the racket parallel to the floor or having a lazy wrist are also outlined. Performance is evaluated based on landing serves accurately in the target area.