I'm afraid the first set don't really inspire me particularly - I think there is just too much dark grey / black.
(The first is quite a strong image, just not to my taste)
The second set are a different matter.
#1 Love the colours, beautiful image
#2 I actually find the lines do work - my eye flows from the large foreground rock out to the left edge, then back across the image following the line of the shore to the right.
Not traditional lead in lines, but they do provide a definite 'path' through the image.
#3 is the weakest of the three for me, the foreground rocks seem a bit too dominant, but still a great tonal range in the image.
Glad to hear you are feeling your photography is going well, and look forward to seeing more from you in the future.