About the speedy on post 103, get rid off the gray-ish triangle on the foreground because I believe you wanted the mountain in the background to be the focal point and this sort of triangle is quite distracting.
I really like the shapes on the sides and they work well as foreground. They seem like remains of an old forest or something, very organic.
I'm not an expert in composition but I hope this note helps you a bit
Impressive speedies! Your colour choices are sweet, and I like the variety of your content.
As for the pic in post #103, I agree with Shehaub. It seems to be missing one focal point, my eyes went all over the picture. It's an interesting concept, though, hope you'll do something more with it.
Hey, your colors look good. Your drawings, however, need some work. One suggestion is to see your paper as a 3d space. The bridgman book talks about that in massing. I'll reread that section and try to learn from that if I were you. Don't worry about tacking on tons of details at the start. One thing about drawing is that you have to know the shape and form of the object you're drawing. If you don't, you can't expect your viewers to pick up what you're trying to draw. Play with the simple shapes and try to put them on paper from different angles and viewpoints, then go from there. Once you know the basics, it'll translate to your colors.