The glossy white panels I use for photos are a dull grayish tan on the backside. Been thinking about doing the same. Unfortunately there is a large gap between my " thinking" and my "doing" !Thanks Graham, much appreciated. The concrete is the underside of an old strip of lino that I'd used a floor covering in the shed stuck on a board. A few lines drawn, a dab or two of PVA, a sprinkle of artificial grass and were done. The grass base in the extra photos is an old bit of carpet sprayed with a selection of green paint.