When looking at it at this size its very nice, I like the use of long exposure and the light is wonderful but it's let down when you look at it at full size, it's rather soft, now looking at the settings for this photo I noticed that you've closed the aperture right up in order to slow the shutter speed right down, now I suspect this is the cause of the softness, as shooting at f/20 will cause the light reaching the sensor to become distorted :thumbsdown: this is where you really need a ND Filter to enable you to keep your aperture at a wider size say f8-11 as generally you'll find this to be the sharpest area of your lens...other causes of softness could be leaving VR on when the camera is on a tripod or the wind buffeting the camera, but I'm confident it's the aperture that is the cause on this occasions
Welcome to TP
Matt