I think the broken limb should stay, because that's the way it really was, but that's just my own doc-style preferences. Without it, it looks a little too "perfected."
i like it better with the broken branches in the picture. if you like it better without them, i think it would look better if you either removed the bushes or whatever that is on the left side, or cloned something similiar to the other side. with the broken branches just removed, the first thing i notice is the empty space there, and not the tree. i think it brightens that spot up too much, and draws attention to it.
i figured i would do a real quick edit to demonstrate what i meant in my other reply. its not perfect, but i think it looks a little better with something in that empty space rather than having nothing there.
Thanks everyone for the great ideas. I pass this tree many times but was just waiting for the right time to take it's picture. Every now and then there are cows loungeing around it. I always print some of my favorite photos, I am slowly working on a portfolio. So many great ideas and options for a single tree. John05 I like what you have done as well. Great PS work. I guess I came to the right place for ideas...
Cosmo