I drew a series of arshes in windows draw and saved as an ai file. imported the first into the main plane and then re imported it as a sweep path into the right pane. It is a very simple shape and I plan on making a mor complex profile later. I tried to import into the VM and use subdivision to smooth the poles into cilinders but it did not work. I also need to go back and make a separate arch like Eric did so the arch stones will work better. Having fun with this shader, I want to get a separate bump chanel going for the green moss but does not seem to work and now I have so many mixers I am loosing track. Also, I added some slope to get the dark water line, but it seems to project straingly- perhapse if i convert to a Vertex mesh and box map? hmmm... This is a shot of the arches in the spline modeler