Before uploading or taking the photo I now ask myself the question (what others have suggested)...
I've learned this is actually a tough question to honestly ask oneself.
Despite my new found confidence and understanding of what DT wants, I recently had two photos refused that I thought were "sure things".
How do you like the "Eating Crabs" photo? Trust me, it was very difficult to get. The little guy refused to come out of his shell!
Talk about a hand cramp!
I've also learned that a great subject just isn't great without excellent lighting.