When I’m teaching photography, one of the themes we usually look at quite early on is how to get a sense of depth into an image. Leading lines, strong foreground and background, or inventive framing are all potentially powerful ways of achieving this. In today’s image, nature helped me a lot (or at least the Duchess of Lauderdale, who oversaw the garden design at Ham House, provided a strong helping hand!) The plunging line of trees and hedging carves a path right through the image, to the gate in the distance, and the tantalising question of what lies beyond…