Need help on lakes and rivers

I hope somebody may be able to help me out.

I’m finding that trying to make water look really and lake bottoms as well

every time the 2part resin wrinkles up and it looks bad.

so if anybody can give me some info thanks

You’ll get more than enough answers to that over on the Model Railroader forum. Some of us are modellers here, but most of us deal with the real thing, either as fans or active railroaders.