Interesting overall composition of B&W with a smattering of color. The gold hue is what really stands out - actually it pops off the page and really captures the eye's attention. What I find interesting about this photo is the gold of the fence trails down as a horizon line off into the distance much like the orange/gold leaves near the cobblestone pathway do as well. My critique on this piece is that for added interest you could have included more of that trail of leaves to follow and mimic that horizon line of the fence. A juxtaposition of a man-made one to a nature made one.
Nice composition. I'm never really a fan of selective desaturation (just my personal choice) and it's not my favorite in this photo either, although maybe if it was muted a little.
6 - Nice. Good use of selective desaturation. Criticism; perhaps an even sharper perspective (dependent what was there of course), incorporating a little more 'gutter leaves', may have made this better in my opinion. Definitely 640 height would have helped you too. Not sure on the frame, works, but perhaps just a little thick, not sure.