I find this to be an interesting shot - great perspective. The light coming through is a bit harsh and would have been improved by adjusting your exposure factors. A real shame as it looks like there would have been a lot more detail. The composition is okay, although for shots like this a little bit of an angle that elongates is my preference - but not necessarily what you were after. I do think the off-centering was a good choice. Good leading lines here. Keep up the cfreative thinking and good luck with your future entries.
6 - Interesting. Looks like an unusual perspective, whatever it is. Back PC to see what this is. Criticism; 640 width would have given this a little extra. Depending on opportunity, a slight focus adjustment to try to exclude that branch/whatever in the 'background' on the left, may have enhanced the pattern effect in this shot and given it more impact in my opinion.