Since you live in Bedford, you know the main beauty of a fine Bedford lock is the grace and finesse of the shape of the hammer, and the fine lines of the slender lock plate.
You seem to have a fair start on the shape. If it were me, I'd stand back and study some of those patterns or old locks you have, then go ahead and add a good measure of grace and finesse, and then you oughta be getting there.
John