As to the first photo, all's been said that needs to be said. Focus is downright wrong, as it is on something completely uninteresting.
As to what you can further do to help your second photo along (which has a tad too little countryside to be seen at the bottom, though I am happy NOT to see a horizon that cuts the photo in two equal halves!!!) is to separately brighten that part of your photo, without touching the sky. I usually work with a very well feathered lasso tool (not knowing if the new versions of PS still have this feature?) so work on separate parts of a photo, others prefer to work with layers. Also I would tend to crop off the dark grey part of the clouds closest to the upper part of your picture, but that's also because I'm used to the format my camera gives me (2:3 it is, I think, not 3:4).