"Good Example" videos of (downward) lunging transitions?
Does anybody have any videos they prefer over others, for showing proper lunging? I'm looking for examples of body language a horse should be giving when lunging politely, but also examples of transitions, both going up AND down, to look at the body language being given to the horse by the person. Not everything/everybody needs to be perfect in the video, but if the person/horse is doing a particularly good job at something, please point that part out so I can pay attention to the 'good' parts.
I do have a trainer, though only have lessons a couple times a month, and have found that watching others and trying things out myself has been helping. I've been able to improve a bit on just basic communication in the round pen with my horse, but still have lots to work on - specifically transitioning from a trot to a walk, without just stopping entirely. He seems to want to offer me a piaffe before he'll go into a walk, though he goes very easily from different speeds of trot, or from trot/canter/trot/canter very easily from voice and body language alone. He does both directions equally well, I just hope to see more examples (rather than text) of how other people communicate with their horses effectively when lunging.