You forgot to plop a chocolate mint bimbo on a thirds line, silly! BTW, I think this is either Greendell or Huntsville. This photo is zen because your eyes go everywhere and nowhere at once. And when I look at this picture, I get the sensation of a cool breeze wafting in one of my ears and out the other. I am amazing for that huge bone!
You used a longer exposure, which is great! It's always good to manipulate settings to achieve different results. The focus is on, and the colors turned out very well. In fact, there are many very good technical aspects of your picture.
However, what it's missing is a strong center of interest. The picture doesn't have much of a subject, leaving the point of interest at the stream. A stream can be a center of interest, but it must be shot from a more dynamic point of view. Next time try letting the stream flow down into the frame, rather than across it. The composition does a nice job of drawing the eye to the stream, but it includes the unnecessarily dull greenery on the top and bottom. Always remember that it helps to fill your frame with the subject, and not surround it by anything distracting.
You are on the right track, and you nailed the technical execution. Just work on your composition and think about the picture as highlighting something that people will find interesting to look at. Happy shooting!!
I think this photo should have been composed to eliminate some of the pale sticks and branches hanging around the edges. It makes the picture seem a bit cluttered and the focus on the smooth water is lost. Zooming in and isolating one of the lovely moss covered rocks with water flowing past the front, I feel, would have had more impact. Well spotted though.