Gym, legs
Swing your arms, jump onto the box and land softly in a squat. Step down, don't jump down.
Beta: we're less sure how well one camera can judge this move, so treat the scores as a rough guide.
Phone at hip height, about 3 metres away, filming you from the side.
Your whole body, head to feet, needs to be in the picture. The coach will remind you if it can't see you.
Load your legs
Your dip was shallow. Sink into a quarter squat before you jump.
Swing your arms
Your arms stayed down. Swing them up hard as you jump.
Land soft
You landed stiff-legged. Land quietly with your knees bent.