I think you have a cool scene going here, lots of good modeling and composition. Just my 2 cents to make it a tad better, getting soft shadows by using "GI" or "soft shadows" would increase the realism. I might give the sunlight a slightly orange tint to warm up the scene. Also, try upping the bump on the terrain, it's a little flat. Nobody worries about you making changes and showing the WIP, it's interesting to follow the progress. I'd keep going 'til you just can't stand it anymore. Patrick