Well, thought to offer some of my views on the photo.
It is a nice idea you got there - and you've done well in putting the new sky in (I would have no skills to do that..)
You said you've used PS on it - I wonder why you decided not to PS the 'scaffolding' on the left hand side of the photo.
Shame about the advertising boards by the pitch - really takes something away from the shot when you don't see that much of the green grass of the pitch..