It's amazing the things that you can learn in a short time being around the right people.
I've been going back and looking at some of my old photos, some that I thought were actually pretty good, and have figured out they weren't that good to begin with. I can quickly pick out several things that I should have done differently with the photos that would have made them so much better.
It's also nice to rework some of the old photos now that I have an idea of what I'm doing with some of the post processing programs. Even with that knowledge, there are still several photos I just can't "save". LOL