Hi Paul,
Fair enough, I didn't want to steam in if you were looking for "good shots" or say "good shot" if you were looking for further comment.
Landscapes is one are I like, and I am very jealous of the big smooth rocks going into the sea - we have just miles and miles of Sandy beaches here.
Ok my thoughts follow. Feel free to tell me to sod off!
1) Has some nice colours however that's about it. There is no foreground interest to the shot and the silhoutted shadows in my opinion offer nothing to it. You've captured a pretty sunset with interesting pastelly colours in the sky, but nothing much more I can add on this.
2) Lots of foreground interest and some nice use of ND filters. Possibly a tad overexposed however the netbook I am on in a hotel room at the moment is uncalibrated, so, I'll hold that thought. What in, my opinion would make it better, is, if possible get lower into the shot which will emphasise the foreground, bring the horizon onto a 1/3 and also help flatten it. Whilst I appreciate the earth is not flat, the general rule for seascapes is the horizon is flat. (yuo won't fall off the edge though!) Either that or a tweak of lens correction in PS to even it out. Overall though, I do like it.
3) Again, I like the composition, though again feel it may be slightly overexposed. (see above) ND filter may help or a bit of photoshopping of raw files can help where you can adjust one for the foreground and another for the sky and merge....... (though to be honest, grad ND is the better way forwards.)
4) Some nice colours and I feel it will take a bit of contrast / sat boost (a gentle one) to further bring out the colours. Compositionally , I feel it would benefit from a lower angle to again move horizons onto a 1/3 and increase the foreground interest.
Those are just my opinions. Sorry if it's not in "fluffy" language. It's easy to sit here and look at a photo and offer your opinion without knowing of the location, and restraints, access problems, etc......