Wendell,
I think some of your images are good, but not processed to their best potential. Many seem dark and lack contrast and/or saturation. I would suggest that you re-edit some of the images and see how you like them. There are many photographers as good as you or better here, and the advantage they might have, is in the processing, not the vision.
Here's my small group: http://fineartamerica.com/groups/photo-critique-one-on-one-.html
Rich