Aloha,
The first one is spot on of for the portfolio title, but is the weakest one.
The second image has real latent strength and could be much stronger with some cropping, it would benefit the image to remove some foreground so the bands of light and dark are equal, the white foreground as it stands now overpowers the subject hill and by keeping it in the image it also keeps the hill too far back (and dead center) and therefore less important, although clearly it is the subject. maybe a little less sky would work to strengthen the image as well, just because the pattern of the clouds is banding in the same horizontal direction as the images main elements doesn't mean it strengthens the image, the pale part of the clouds, just takes the viewers eye softly out of the images, wherein if the sky was cropped back to just the dark, the viewer couldn't leave the picture and would be continually be drawn back to the hill. And i guess the trick here is how to crop it so the hill isn't just dead center. If you crop the image this way, you'll need to go back and work on the highlights on the left of the hill, as the bulge on the left of the hill is slightly overexposed, and it shows now and would really show when strengthening the composition.
but there is a very strong image in there for sure.
The third one is nice but muddled.
The third one is nice but a bit muddled.