LEARNING THE HALF-HALT - You and your horse

Half Halt Tips
Its not only you who is learning how to perform a half - halt - your horse is too. Unless he is already well schooled, 
don't expect the half-halt to work miracles on the first few occasions that you try it. Ask for only a small difference at first, keeping 
your rein aids soft and rewarding your horse for responding.

 If you have problems achieving the half-halt with your horse, have a lesson on an experienced horse that is used to half-halting. 
This will show you which aids work and what a half halt should feel like. You will then be in a much better position to ride the movement