Read the Opponent’s Spin
All high-balls should not be smashed in the same manner. When you see a high topspin ball, step back slightly, start your racket high, and smash forward and down. When you see a high backspin ball, step forward, start your racket lower and the angle more open, while smashing forward and slightly up.
Add Spin to Your Smash
A smash with some topspin will possibly be 10% slower, but it will usually have about 50% more control. Be consistent in smashing – add topspin!
Place Your Smash Correctly