I don't like the random light brown bushes thrown in, or the long straight section before the turn around for the corkscrews. I'd say cut out at least one straight section and it'll look much better.
Overall, not to bad if a bit messy.
I think the 'light brown bushes' are actually wheat, and also I have to disagree with you. I think they look good! However, CCI, I think it would look better if you used them more sparingly.
Edit: Looking at the above picture, You should make a quarter loop and go down some, so there is less of an awkward pullin. But then, the part of the ride where it goes vertical may look out of place. I'm not entirely sure.
Dragon is everyone's master.