Putting in a pond questions

[sov.worker]

We dug with an excavator. The maximum depth is 1.5 meters. We used geotextiles and liner edpm Firestone. This is the second pond using this technology. The first one has been in use for 20 years, and everything is fine. We didn't glue the liner, it's a single piece. I don't really like the creases on the liner, but I've gotten used to them. In the photo, we just finished the main work.