Hey Mark!
It's awesome seeing you get here. It was for sure fun to meet you and John in Yosemite and then to keep bumping into you as we shot later in the day.
Your first one, is really awesome! Now that's a grand way to capture El Capitan! Man, I am jealous as I am not sure mine of El Capitan look as good as that one.
You captured a lot of other cool shots here. I like the monotone look of the last one, there is a lot of cool features to that.
Your star shot turned out pretty good. The one thing that can be an issue shooting the stars at night is just how dark those shadows can get. For me personally, since the stars look good, but only occupy a smaller area in the composition, I would like to see some more detail in the ground layer. I am guessing you shot multiple shots from that location, so I would try brightening it some more, and then look at the tutorial I have written up for decreasing noise in the ground layer in night shots, it's located in the Article section. El Cap and the sky both look great, so I would keep that and just blend in the brighter area of a redone ground layer into it. If you want to try it and need any help with the Photoshop end, just say the word and I or one of the other guys can help.