I am well on the way with the first piece off the list of future pieces.
When I was out doing some photography a year ago now, I took some photos of the lichen on the stone including on one of the gravestones. The carved text said 'IN MEMORY OF'. I put the photo into Photoshop and applied one of the filters. I obtained an effect which appealed (not to everyone I would imagine but each to their own). I could see a small piece based on this image.