Ulco, the sand ripples have worked out well. I'm trying to decide if I want to change the POV down much lower and maintain the large rock and surrounding stones sizes (I did change the large rock's height and shape).
The key was your implementing the 'Landmark' to help identify true scale. I would have to greatly reduce the vegetation; and, at the original POV, the plants would hardly be visible. Thus, lowering the POV makes sense. I noted the fake sand sizes may be too large and will try reducing them; and, maybe adding a reflective shader to them.
The whole project has been a nice learning experience. Hopefully, will have more results soon.