I've finished two more in my Fences and Nests Series. Above is Fences and Nests #7 and below Fences and Nests #8.
I have four more in the works, which should be done by the end of the week. You can see the eight finished pieces in this series on mywebsite. Note the change in contrast and "color" of the grids as you look at them. There will be more obvious changes in the last four pieces.