Hey Lenny, pretty nice work at Red Rock.
A couple of suggestions.
I would crop the bottom off of #2, I think it's too much of just barren desert to hold much interest. I would crop halfway from the bottom of the road to the bottom of the photo off.
Similar in #1, I would crop almost all of the bottom off to right under the road.
In #3, that would be my least favorite. It has 2 different foregrounds split in half, that is visually distracting. I would just have gone tighter and eliminated all of that foreground and shot the background rocks with the clouds.