Neal, after giving it a wash and painting the different colored ‘bricks’ I just painted the seams with a very thin brush and MM flat black. I did the seams after I applied the brick to the foamcore. I did a 5 brick high by 4 brick wide pattern but I think it should have been 5 by 5.
I finally got the rest of brick sheet today so I’m hoping to get this finished and planted before the weekend.