I agree with Frank (Focus_Man). The main focus point in this image is the waterfall and there is too much bank both sides of the stream and plenty of height. This only distracts the eye and yet you have a lovely line (stream) that leads the eye.
I have upload two different images with slight change to crops…..down to personal taste. Both however, have taken out most of the stream bank and some of the height.
In addition, using Lightroom 3, I gave it some fill light, sharpness and touch of saturation to bring out the colours of foliage and to enhance the water together with the bank on bottom left as this has nice texture.
Hope you find this useful…….either way, feel free to let me know your thoughts on this.