Down the Stream

I took this in the late afternoon on a little stream that had glorious smooth lines above the rocks and a little white water below. The reflections of sky and green leaves, plus the rocks under the water made an interesting and fun challenge for me. I'd be interested in your comments on this as I wonder if it is too dark, and/or too busy?

Canon 5dM3, IS0320, 105mm, f/18, 0.8 sec.

Thanks in advance for any comments or critiques.