While I think your exposure is quite good, I think that your shutter speed is too long, thereby draining all life from the water. It has become just something white with no detail. Perhaps you might take a series of shots at different shutter speeds to see the changes in the water.
i am a sucker for wooly water too, but tend to agree with tex with this image. i find the large rock near the top left distracting. at first i thought it was an arched bridge, and once noticed the eye keeps going back.