Tom, this is excellent idea :)
Photo correction challenges can be a REAL challenge. The photo you uploaded is real mess lol.. First I was use variations to remove the yellow look and restore real colors, then curves (just a slight tweak) to restore contrast, then dust &scratches (2%) that was enough to remove good part of scratches without loosing too much details. Now I can start correcting lol. :)

Tihomir

Open your mind and share the knowledge!