Hi Paul,
Welcome aboard. First, you must understand that I like waterfalls a lot, so I am a bit biased when I say that I enjoy the photograph. You certainly caught the water nicely. There are a couple of areas where the image looks burned out and the shadows enveloping (by the rocks at the front of the photo). May I ask what the conditions of the shot were? I am wondering if these minor problems can be fixed with a little work in PS.
James