I recently found a magazine assignment from when I was studying Multimedia Design.
The idea was to make her look like a porcelain doll. But there was something on the photo I wanted to fix: the white area which should be dark.. and give her some colour on the cheeks. We are talking about really small changes, but as you can see it made the photo look so much better!
If you want to know how the original photo look like take a look at this. I made a collage of the old photo, the photo I edited it to when I studied Multimedia Design, and the last edit I did now.