I came across a discarded pub table top which suggested a ploughed field. I wanted horse drawn ploughing as the furrows are clearer, and had to wait for the right time of the year to see the furrows and ask knowledgeable people. There is miles of walking in this carving. It was carved on a flat bench, then I turned it vertical, stepped back 6 foot so that I could see the shadow. I was carving for the shadow not the actual shape. All the carving is within 1cm of the surface.