Hi Lindsay,
#1 - I'm not sure I'd go as far with the lower edge crop as Joe suggests because that would chop the trees off in their prime (over on the LHS), but I would remove some, I might also take an equal measure (about 10% image height) from the top too.
#2 - Conversely, this feels a little too tightly cropped - there's no pleasing some folks
#3 - I find the red rock quite a distraction, if I move the LyteBox off to the right edge of my monitor, I can then concentrate on the textures of the grasses and logs and the lighting on those logs, however, the composition is then too 'almost square'. Depending upon circumstance, I'd have been tempted to physically remove the red rock if no one would care.
#4 - I always find myself agonising over exactly where to crop shots such as the Rock Wall
I like the light angle you captured, I am left wishing there was more colour in the lichen and wonder what it would look like if wet, but for all I know, in that locale, 'wasting' water watering rocks to take their photo might get you shouted at!
Well, for what they are worth, those are my musing on this week's shots, I hope they are of some help, or if nothing else; amusement
Cheers, Dave