Looking really good overall, I think the direction is solid. One thing that sticks out to me is that a lot of the scenes are a bit monochromatic or one-note. For example, the large rocks in the exterior near the river don't seem to have much breakup. Try and get some variation in the individual asset like heavy moss or…
I'm really impressed with your iterations on this, keep posting! I think your last shot is definitely going in the right direction. The composition feels a lot stronger, but the thing I notice though is it still feels kind of flat: there is a foreground that is mostly shadowed silhouette and a mid-ground with some visual…
I think what your scene might need is some focus points. Like objects for which the viewer can tell he's in a specific part of the level if he ever were to tell another person. It might not be your intention of having someone walking around in it, but that's a feedback I once got for my scenes :D I think it's really useful…