#1 - My biggest issue with this is the composition. The horizon is directly in the middle of the frame. This tends to make photos less dynamic. If you'd moved the horizon up the frame a bit, it would be a lot better. Google 'Rule of Thirds' for a better explanation why. Also the foreground is out of focus. I don't know if you were on a tripod or not, but if you were, there's two things you can do to try to fix that. The first is to use a small aperture. If you can manage it, f/16 should give you enough DoF. It's worth bumping the ISO up a bit if you have to, but using a tripod and low shutter speed is a better option. Next would be to manually focus to the hyperfocal distance. Basically what this is, it's the closest point you can focus to that still has infinity in focus. Your best bet would be to Google hyperfocal distance for a tutorial on how to utilize it. This is a really beautiful location, and if you have the chance to go back, I would.
#2 - Sometimes atmospheric haze (it's the slight lightening, and blueing of distant objects) can help to give a sense of scale in a photo. But in this photo, I think it detracts. There's not much you can do about this, unfortunately. The sky is on the verge of being washed out, so a lower exposure might have helped bring out the blue of the sky. Be careful though, because that would also make your forground darker.
On both of these photos, you did a great job of ensuring that the horizon was level. That's one of the easiest mistakes to make, and you kept from doing it. Nice work. You're doing a good job, so keep it up!