I've always been taught to turn my head in the way you want to go but that may just be for jumping like when your jumping a fence you then on landing turn your head to the next fence so that you can see the direct path for the next fence and save time.
Originally Posted by ~*~anebel~*~
OK, just to clear some things up.
First about the turning, think about it this way. If you have a small child on your shoulders and it turns to look at something and you aren't prepared for it, it's going to catch you off balance and you are going to have to try to re balance and keep the kid on your shoulders all without falling down.
As for a half halt: Basically it is the combination of bracing your back, applying leg and riding with the seat in order to shorten a horse's stride and bring their frame more up while shifting weight onto the haunches. For such a simple name, it is a very complicated aid and I highly recommend seeking a dressage coach to help you develop a feel and timing to correctly apply this aid.
i agree with this it's perhaps better to just use leg aids to tell the horse where you want to go.
And the half halts are very complicated best not to just read it from somewhere and try it better if you have it hands on with someone showing you.