Switzers landscape sketch comp with Karl Gnass

Even though I haven't taken any classes at the American Animation Institute for about a year, I still love taking Karl's workshops, particularly his landscape sketch comps. A day of hiking and drawing in the mountains I love. What could be better? He holds these twice a year, in April and September and I've been trying to make as many of them as possible. I think this is my 3rd or 4th trip, and I keep trying to push my skills a bit more with each trip. 

I made good progress this time with my dark colors and shadows, although as the afternoon progressed, i got messier and messier.