#1 and #5 really bug me because you cut off the bench and motor. I don't know why but that has really been getting to be lately. To be honest with you though, the subjects just aren't that interesting. #2 is the best one there but the rest are pretty boring. #1 could have potential but I would have executed it differently. In #5 you should have taken the photo horizontally, and in #3 you over exposed it a bit. You could have gone a little wider in #2.