Beautiful...although framing wise I would have personally made the choice to shift the rock structure to one of the sides...but this off-center framing works like a charm =D Another great job Duncan!
Gorgeous colours, wonderful. Yes, perhaps composition isn't quite what I would do - but then I don't know what the options were... it looks like a seat, actually, except for the weeds on the top!!
Very nostalgic yellow-ish tones here. I find the rock dominates perhaps a bit much for me here. I don't know the scene, but if possible I'd suggest backing up a little to show more of the environment and give the rock space to 'breathe'. Otherwise, very nice and filmy-toned.