Stand with your legs hip-width apart and your knees slightly bent with your feet pointing forwards.
Spring up high into the air, jumping forwards, and landing softly.
Repeat the movement but jumping backwards, first to one side and then the other.
Your toes should be the first thing to land on the floor, followed by your heels, and a bend of your knees.
Try to not stand straight in between the jumps, keep a small squat in your knees.