I finally set some of my wave moulds.

I think this looks not to bad.

It will take me a few days to do everything i want as i need to make new mould copies first

As requested , here is some more detail about the mould. In plasticine i made a river section of about 7-8 cm. From this i made a negative with silicone. From the silicone mould i am doing copies with clear resin, poured as thin as possible
Holes will be filled by overpouring the whole with a thin coat of resin. Gaps between the copies (glued on the resin river bed with a thin coat of resin, again ) are completed with acrylic gel.