Have you ever driven before, I dont see how you can break a pony to drive without knowing how to drive yourself. At first glance your shafts dont look right. I dont see any furniture on them at all ie tug stops and breeching ds and they look very very long in proportion to their width though that could be just the photo. If you look on the British Driving Society website you should find a list of instructors in your area or, failing that, look up your local club and phone the secretary and ask for instructors or even a club member that might be happy to teach you a bit in exchange for some help.