I applied to Istock the other day and I was rejected. None of the three photos had people in them and they were more artistic shots so I'm not that surprised. I found a few pictures that I'm thinking of re-applying with. I'm looking for feedback these five pictures; which should I use as the 3 to apply with? Should i try to find other pictures? Do only one or two work? Etc. Thanks a bunch!

I put the pictures in a set on flickr so it should be easy to scroll through them:
http://www.flickr.com/photos/benjaminmorin/sets/72157629345453074/