Two Walks Of Life -- Whatever your walk of life you've got to know the tricks of the trade. And when you are becoming a Mannequin the most operative word is walk itself. Whether it be up or down a room, or up and down stairs, there is only one correct way, and here during the making of a film on the life of a London fashion model, Fiona Campbell-Walter is showing how it should be done. Although the girls take their walking seriously there's always room for humour, as one of the cleaners at the s