>>2328163OP here. The drawings you’ve posted are super cool. Water is super hard to draw, especially if it’s moving. I paint more often than I draw, which is a bad habit and I should draw more. But pic related is one is one of a few river drawings and paintings I’ve done. I’m not the best at depicting it, but a large part of it is the shape of a rock, how fast/strongly the water is flowing and then how the water flows over that rock. John Singer Sargent has some amazing paintings of rivers and streams.