The holder needs to make sure they do not remove their hand. The kicker should kick the bottom half of the ball and to let go of the ball would cause the ball to fall over. After the kick, the holder should keep his eyes on the spot. Looking up after the ball too soon could cause the holder to accidentally move the ball as the kicker is kicking it. If the snap is high, it is the job of the holder to make the decision on whether to try and place the ball on the spot for the kick, or to abort the kick and try to run a backup play that is usually a holder scramble or a pass.