Contemporary mixed media painting

I am a BA student working on my final project, a collection of
contemporary mixed media material.  One of the objects is a mixed
media painting on canvas.  The following is the artist's description
of her technique:

   "I am using untreated raw bee's wax. The canvas piece is gessoed.
    Then paper collaged on it, followed by a layer of bee's wax.
    Then oil pigmented again, burnt umber I think and then if I
    remember right there is a layer of dammar varnish."

The painting has a large, deep scratch from a nail, which goes
through all the layers and the canvas.  I am in the research stages
and trying to collect a variety of ideas for treatment. Suggestions?


                                  ***
                  Conservation DistList Instance 17:58
                   Distributed: Monday, March 8, 2004
                       Message Id: cdl-17-58-012
                                  ***