By focusing on key elements such as proper preparation with the racket behind the head, using the non-dominant hand as a guide for the contact point, bending your legs and moving upwards during the shot, and utilizing wrist action and spin, especially when hitting from further back in the court. Practice drills focusing on spin and trajectory will reinforce these improvements.
This is a great resource to quickly improve your smash technique. The coach clearly explains the key elements of a good smash, such as preparation, contact point, and body movement. You'll find the live coaching and drills particularly helpful for immediate improvements to your shot. Pay attention to the tips on generating spin, it can really change your smash.
