Check out how Tyson McGuffin, Aspen Kern and Jordan Briones hit their overheads. Having a strong overhead smash is key to being able to end points when you have your opponents in trouble. It can sometimes take two or three to finally get the point.

These pros make it look easy.

Notice that although each player has their own unique style, the basic mechanics of the footwork, setup and motion are the same leading to consistent, repeatable and effective overhead smash finishing shots.