You can use this size of field as big as you like. But create a box, a small free zone and then another box. In the top box you have to make a pass before you can lay the ball into the free zone. Then play out a 3 v 2.

Having quality in our passing and receiving to keep away from the defenders but being open to be able to play the ball forward (to the free zone). Once through here playing out a game like 2 v 2.

You can play around with the numbers to suit your group. Plus play around with the amount of passes in the top box before being able to play forward.