I saw the Lippizaner (sp?) Stallions when it came to NYC this past October. The movements they do take years to do. There was this one rescued stallion, that was able to learn, what took years, in a couple of months times.
The 3 year old stud was getting the hang of it, but i guess it will take many more months for him to be performing it flawlessly, or close to it.
But each horse has its own learning process. Some can take months, where others take years.
Horselover, i think it would be cool to teach Janie that, I'm sure it will help in whatever discipline you do with her. Atleast she'll know where her feet are, and that could help too when you jump (not sure, but i would think it would)