Open hand to the neck

This technique can only be used against the neck because it's a open hand attack`with the side of your hand.  To start you first bring your open hand up to the side of your shoulder then bring palm down while bringing hand sideways and your hand should be face down just before striking the neck.  Imagine someone next to you sitting and they throw a punch and you block it with your horizontal forearm that's next to the side of your head then perform the technique.

Another way to deliver a open hand strike to the neck is to have your flat hand facing palm up on the way to your target.