I like your lighting here. Seems like there should be something more on the left side, though. A boulder perhaps, or a bush, or you could rotate the camera so the bench is more to the left of the scene. and maybe there should be some rocks and tufts of grass/weeds scattered around in the background? Just suggestions, though. I like this image. Also, just as a general suggestion, not necessarily related to this particular image, try changing around the view so the horizon isn't always right in the center. It can make for a much more dynamic image. By the way, Bryce 4 does have rocks.