So is this an exercise in the use of language? I don't think plain language is precise enough to give you the information that you need. There is special language that flamenco teachers use, but its function is to catalog positions and movements that have been demonstrated for the student. Without the experiential information, the language has no meaning. As you have pointed out, even pictures, which contain more information than the language does, don't contain enough information to be useful. I don't think you can get it unless some shows you how to do it, and even then, you'll need a lot of practice to learn it--