Many thanks for these replies, we appreciate this very much.

Some of the videos posted in the later post are with shorts, but the light is not good and there is no greater number of steps. We need to find a place with good light where we can film a good number of steps from the side. We'll do that with no t-shirt or a tight t-shirt.

Could anyone recommend any exercises that would build up the appropriate muscles and stretches that would loosen up the appropriate areas?

Thanks again.