OK, here's a version with a somewhat more even background. I really need to do better getting this right in camera as doing it in front of a PC is a lot less fun

How does it look?
It looks fine. You could also try duplicating the layer in PS, set the top layer to screen mode, knock it back a bit to 50% or so, and then mask out the family. That would help keep it more even.
If you are planning to print it out, I would work on it a bit more, but if its just for the screen, then it look great as is.

