Personally, I think it should just be a lesson learned for future challenges. If you think you are going to change your mind with your entry, just wait until the last day to enter and you can choose whatever project you'd like.
To me, it would seem unfair if someone entered something, looked at all of the other entries in comparison and then decided to reshoot & re-enter.
Thanks to Batty for setting up the challenge and dealing with all of our crazy questions!!
I agree! I know that I immediately picked out my favorite photo from the ones that I have already taken. After looking at some of the others, I know that I probably could have taken a more interesting shot.
So, I've taken it as a lesson learned in more ways than one
Checking out all of these pics has been like a mini-photography course: lighting, composition, subject matter- so many great examples to help me take better photos in the future. Yay!