I've been spending a lot time in Photo Shop lately. Learning new tips and tricks for making photos pop and rescuing photos that might otherwise have been throw aways. Over exposure? Not a problem. I learned that if you make a new layer and paint fill it with a dark gray and then make that layer an overlay or soft light, you can bring out some detail that might otherwise have been lost. Of course that won't work if your image is to far over exposed.
The following photo was one that was under exposed though and boosting the contrast washed out the background to much. By adding a white overlay with black grunge edges I was able to lighten her face without losing the detail in the background.