Being able to properly evaluate players and putting the pieces together to make the strongest team, which usually means playing some in not their normal or strongest position. Keep it simple, teach them to make quick reads and decisions, play smart and not out of control.

As Manchester stated, a matter of keeping the proper shape, providing support when needed, making the proper runs with and without the ball, pressure the ball, and as Manchester also noted, being able to counter effectively and quickly.

Restarts should be immediate, all lanes filled, and not afraid to play the ball back and reset. Why do so many teams go one direction, straight?

My only question, why is this so hard to teach and have it displayed properly on the pitch when some of these teams have kids that have been playing for years?