The end of the rein running from the bridle goes between your little finger and ring finger and into your hand, which should be slightly clenched into a fist. It should then come out between the thumb and index finger. Place your thumb loosely and lightly on your fist. Place the ends of the reins over the horse's neck on the right side so that they hang down between the reins and the horse's neck. Hold your hands upright with your thumbs on top. Both hands should be about a fist's width apart. Your forearms should form a straight line with your wrists and be slightly bent. To perform a reining action, you only need to move your fingers and/or tilt your wrist slightly upwards. Then bring your hands back to the starting position.