This worked well on the side of the wall but then I was stumped on how to cover the top and the top corner.

What I needed was some way of forming paving blocks around the corner for this I needed something flexible like a bag and eureka cement blocks in tights arrived.

The tights would act as a sausage skin just fill it with cement and lay it and shape it in place. No need for any cement between, as the cement would seep through the tight and bond it. The tight would allow the cement to be formed in any shape giving an organic appearance to the new blocks.(The mix was five parts sharp sand to one part cement plus a dash of plasticiser in the water).

Well this was to good of an idea to waste and before not only were ore walls were made this way along with the edging of the pond.