When teaching any offensive or defensive system, ensure that the training exercises cover the defending, middle, and attacking areas of the pitch.
On the question of how to coach defenders, the first rule of thumb is to explain how the entire team will cover the formation in the 3 thirds of the field. Actually, this applies to all soccer formations and strategies. When teaching any offensive or defensive system, ensure that the training exercises cover the defending, middle, and attacking areas of the pitch.