All three are gorgeous scenes, but they all seem a bit overexposed to me. I think I would darken them up a bit, possibly just targeting the highlights. To me, picture 3's hot spot in the upper right is big enough to be distracting.
I think I'd crop picture #1 down a bit tighter. The girl in the background in the center is out of focus while the branches in the foreground are in focus. The problem is that my eyes keep getting drawn to her... By cropping it in you can move her a bit lower in the frame and possibly not draw the eye to it. What I wouldn't do is sharpen it at all... The softer focus will preserve the ethereal lighting...
#2 is crooked...
And now that I've posted that, I'll also add that I'm just an untrained enthusiast myself and hardly a great photographer... Those suggestions are what I would do if they were my photos, but it doesn't mean that those changes are right or even would achieve what you were trying to achieve when you took the picture...