Can you explain the proper technique for a throw-in in soccer"?

Answer 1

To perform a proper throw-in in soccer, stand with both feet on the ground behind the sideline, hold the ball with both hands, extend your arms behind your head, and throw the ball over your head with both hands while keeping both feet on the ground. The ball must be thrown from behind and over the head, and both feet must remain on the ground until the ball is released.