Well, I honestly don't know what to do about the contrast issue. Like I said though, I've been working on that cliff for a few days and I'm out of ideas and patience. I still haven't even come close to figuring out how to get the diagonals/side views down. I'm done with them for now.
I started redoing this bit. At first I was going to do vines and hope they looked cool. They didn't. So I stuck with an ol' cobblestone wall. I don't know exactly what to do with the roof though... maybe some sort of tent if room permits.