One of hardest edits I've ever done, I can't lead you through cuz I myself don;t know all the things I've done. Original shot was very natural and I tried to keep it that way while fixing problems like harsh shadows and so on. Most trouble I had is that I was able to make it look good up close, but when you zoom out it's totally different and that's my bigest advice to you, always zoom in and out. I must say the patch tool did a great job resolving shadow issues only trick is that you use shortcut options-control-f which enables you to change the opacity on a stroke. All in all took me two hours, lot of time went to just figure what I should do plus, I once  had to start it all  over again.

my edit

original