If you want to communicate with your horse you need to earn its respect. And getting that respect means you have to become the leader. And you do that by mimicking the lead horse. Everything Cheri said is on the money......that IS natural horsemanship. You are basically learning horse language. If you want a respectful horse that will walk up to you from the other end of a 10 acre field then it needs to respect you and it will only respect you if you prove to it you are a worthy leader. And being the leader means that you can get your horse under control and calm their mind when they are getting anxious.....they will look to you for an answer and begin to relax and listen.
Now granted I'm not saying don't spend time with your horse doing nothing. Sure do that stuff too....heck I sat out in the field with my horse last night for an hour watching the sunset on the clouds waiting for the moon to emerge. But I also prove to my horse that I am the one he wants as a leader.....and I do that by making him move his feet....making him get out of my space if he's doing something I don't like, etc...you know, stuff that you would find the leader doing in a herd of horses.