Peter, I found myself thinking of what the colour versions looked like, in particular the last one - also i get caught between the subjects in the last one, I start off by getting led up to the bridge then torn back to the lady on the seat, i guess what i am trying to blunder out here is that, maybe one or the other needs to be more dominate in the image, maybe a composition lower and closer to the lady? anyway i am probably spinning crap here...
The first image is hard work, the lack of symmetry and definite subject makes it a hard image to capture, I keep thinking back to your fisheye one from below the pylon, this one was a standout.
Anyways, i hope this helps, at the very least amusing