I have now finished the central section of the piece with this final block.
I drew this design about 4 different ways before I was happy with it and It still had a more square appearance to it when stitched out than I thought it would. But together with the other blocks it looks alright.
This is a very slow piece of work. I keep thinking I should stitch more but I am making myself stick to the one block a week routine.
You can see what others are doing over at Pintangle.