Training thoughts

Training horses is something i have always found intriguing. How do you convey without words a concept to an animal whose natural response to people is to run far, far away from them (I know the feeling.) It starts off relatively simple. Move away from pressure, stay out of my space. Respect, im the boss. Every horse i have ever dealt with comes across these two rules quite quickly. I play games while walking out youngsters. Follow where i go, stop when i do from walk or trot, hell if they are leaping about, when my feet stop, so do theirs. I walk into their space, they move away, a quick flick of the rope to their chest will set them moving if they dont. My 3yo colt flies out of my way as soon as i turn and walk towards him, he has the respect i need him to have for me, and no matter how silly he is being he is well aware of where i am and comes nowhere near me. Once you get on board however the second rule changes, they cant get out of my space and id rather stay in it and in the saddle. I still want him to move away from pressure, my leg, my hand/bit aid, and i try to make a reward out of a release of said pressure. Horse drops onto bit, hand lightens. Steps away from leg, stop pushing ect. Then it gets more complicated. Hold your head here, move over there, lighter, collect more, engage, balance yourself and me. I have to get these messages across without speech, and im still learning myself. I try hard never to blame my horses for anything that goes wrong, (except sasha, he knows his job and i know mine, but he still tells me to go f**k myself)at some point i failed to communicate what i wanted fully, and wires were crossed. Currently having this problem with tease, but along the way im learning a lot.