Chris, nice comp, but I'm wondering what you achieved by the long exposure? Maybe a bit smother water? I see that it was 8 seconds and ISO 320, f8. why not push it a bit more, and get a 30sec+ exposure? you would start to get a lot more cloud movement and a more surreal effect, but maybe that is just my tendency to push things to the limit. Also the white balance is just a bit off, which tends to be a major problem of dark ND filters. Always helpful to shoot these in RAW so it's not as much of a problem.