Watch my masterclass:

The first thing you have to do is stay low and bend your knees because the ball is going to stay pretty low.

My next tip is not to go forward while you are hitting the ball. Wait for it and then make sure that you control the shot.

And finally keep your racquet head low because you are going to take the ball right after the bounce.

That's my guide to the half-volley. It's up to you to go out and practise.