I have managed to get myself approved at istockphoto, I submitted my best images and was approved. I then added these images to be approved in the library and they were turned down. In two months I have had 5 photos approved with a range of "artifacts" and lighting issues. I am trying not to take it all personally and am striving to improve but it really is disheartening.

I have had a bit of success with Getty Images via flickr but I am just confused as to where I am going wrong and how I am meant to improve?

(flickr is at http://www.flickr.com/flixel)

David