Above, you can see a painting before cleaning (left), after cleaning (top right), and in the middle of the cleaning process (bottom right). 

Above, raking light photos show the before (left) and after (right) results from a heat/vacuum table to stabilize painting and correction of planar deformations.

Above are the before (left) and after (right) effects of the cleaning process.

Above, raking light photos show the results of treatment to clean, consolidate on heat/vacuum table, and line to hold planar deformations and punctures in a flat plane.