On the post with the photos Rita (who is not a rider) asked about the straightness of the reins.
I find when I am teaching that contact is one of the hardest concepts to get across to riders.
This Jane Savoie video features some exercises on developing a soft, fluid contact. Horses have to trust the rider to do their half of developing contact and riders have to let go of some of the ideas about 'putting the horse' in a particular frame and let the partnership develop.
I use these particular exercises all the time, they worked well for me. I still train with reins bridged almost all the time, it is a constant reminder to keep my hands quiet and I make my students ride with crops like this to make them aware of hand movement. This is a well done video.