If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The ball is at your command. Don't mess it up.
Arrow keys - Move Ball (or player in possession)
Players will automatically kick the ball forward; goalies kick the ball further, which gives you extra points. Keep the ball in play for as long as possible.
Avoid refs and cones, picking up shields to protect you from them, and stars for bonus points.