Very nice. Excellent shooting technique and good composition.
Two critiques:
1. The bright houses to the right of the castle draw my attention away in a slightly distracting way. I know they provide context, but might serve your purpose better if they were toned down.
2. Overall the photograph seems contrasty. I know it is late in the day (or early?) but there seems to be enough light kicking around for the shadows to be a little more open at the base of the harbour wall and below the boat in the bottom right.
Great mud, by the way! The texture is amazing.
Thanks for commenting Terry. The houses on the right were reflecting the evening sun straight back at camera, especially the White one, and I had infact shot a faster exposure for that, and those houses in the picture are from that faster exposure. However I agree with you, but that's how it was.
Regarding the shadows, if I look at the picture on my iPad they do look a little black, but not so much on my editing imac even though it is set up for printing so the screen luminance is set very low. They were shadows within shadows really; the whole of the foreground was in shadow anyway, and the EV of the sunlit part was quite high, so really I have tried to keep this image within the range of a single exposure ( even though it actually wasn't) because I don't like the 'HDR' look. However I agree they could be a little less dense, there is plenty of latitude in the file.
Yes, the mud was great. All it needed was a couple of women mud wrestling in it, but unfortunately I can't have everything !