The photo below left was taken from the University Parks in Oxford and it is of Keble College Chapel. It was difficult to change the sky in this one and I had about 4 attempts. I had to completely remove the tree on the left and clone it back in again. To get rid of the over exposed spot, on the right, to the side of the tree, I cloned in a few extra leaves, as you can see.
I've been a dreadful cheat, and, obviously the Bridge of Sighs photo isn't a true depiction of the scene, but I am quite pleased, now, with a lot of the photos on display in my digital frame. I only found out recently that I didn't have the quality on my digital camera set to 'fine', so I am hoping that the next lot of photos I take will be an improvement on the last.