1. Cool clouds, like the sun rays coming out with the blue sky
2. Is that a natural vignette around the top corners? Looks really good. But you should have used the shack thingee or the person/people to the left as a subject instead of the sun (!). Also, the blur at the bottom is a bit distracting, I see what you were trying to do, but imo you should have held the camera higher up (maybe kneeling down would have helped).
3. Overexposed and cliche with the black and white and colour editing.
I would have to say that the 1st one is my favourite, but the second one definitely has some good potential!
Keep shooting!