1) I find the tourists a little distracting in this picture, otherwise great shot.
2) I actually really like this shot. I think it might be my favourite even with the artistic lens flare. I would consider toying with the saturation a little bit to see if it can be made a little bit more natural.
3) I'd be interested in seeing the original shots for 3. How much is HDR actually adding? There is an odd HDR artifact looks like a radioactive rock just below the lighthouse. I'd selectively go in and desaturate that booger.
4) I love this shot except what's happening with all the red on the lighthouse beacon. Is there anything you can do to fix it?
5) lovely shot. If it is possible to change the sun to only one of the shots it would look a little bit better
Best,
-Q