Hi Mica,
Welcome to RetouchPRO!
I had a go at your picture....
I'm not really satisfied with the result, but here it comes...
Working with Photoshop CS2, I used s Shadow/Highlight Adjustment trying to balance shadows, highlights and add some consistency to the very faded areas ... and followed most of the steps described in this
Tutorial to finish the restoration.
The woman has very deep set eyes that's why it is difficult to make out her eyebrows .... as for the background, I think it is one of those painted backdrops photographers used back then ...
