Teach the word 'OPEN" to your players. Ask your players what it means to be "OPEN" then demonstrate cases where a player may not be OPEN:

• too close to the ball,
• too far from the ball,
• stood behind a defender,
• stood next to their own teammate.

Demonstrate where a player can move to "get OPEN" or "OPEN up".

• good distance of support from the ball, not too far, not too close,
• good angle of support: make a clear passing lane that will be difficult for defender to intercept,
• in space If they can constantly think to being OPEN in relation to:
  • the ball,
  • the defender,
  • their teammates then the play may start to OPEN up.

BUT remember to be patient:

• they will forget,
• they want the ball and may not trust their teammates will pass it to them.

Although having your players wan the ball is a healthy sign of their enthusiasm. From the sidelines, you can just simplify your communication to "are you OPEN Jane?" "Johnny, can you get open", "Red Bulls, OPEN Up". Much better than shouting specifics which can be confusing, restrictive and inhibit the players thinking and decision making. It can also take away a lot the enjoyment from the game. Hope this helps BUT don't expect immediate results. PATIENCE. As long as the kids are aware. A SIMPLE WARM-UP GAME: 1 TEAM, 3 BALLS: RULES: CONTROL, PASS, MOVE INTO SPACE/GET OPEN.