Photoshop landscapes

I was inspired by a post on Marco Bucci's blog and Xiangyuan Jie. So I used some photos from my trip to Los Angeles a few months ago, and tried to do some small photoshop sketches. I tried really hard to NOT use the eyedropper tool, but I did end up using it quite a bit. I spent about 20 minutes on each one. I've never really just tried to do any landscape stuff just for the sake of the landscape before. Honestly I barely put any backgrounds in anything I do, which is not a good thing. I would really like to get a better grasp of light and color as well. Plus I live in friggin Florida and this place has plenty of great landscapes to paint, so I guess I don't have any excuses. Enjoy!