how to prepare realistic drawing for oil painting
Hi, I've done a very realistic drawing on thick Canson paper and I want to know how to prepare it for glazing. I want to use the drawing itself as the under painting because it's very contrasty and probably better than an oil painted underpainting. Since I'm oil glazing on paper what I need to know is how to prepare the surface for the glazing. The drawing is done in carbon pencil and I don't want to smear it by putting down a coat of varnish applied with a brush first, so I was thinking of using Blair Retouch varnish to seal the drawing, and then apply a layer of something transparent overtop to protect the drawing as well as prepare the surface for the glazes (would a Liquitex acrylic varnish applied with a brush be okay?) That would be a damar varnish and then a permanent acrylic varnish. Is this okay to use for this purpose(I really want to glaze this drawing on paper). Is the damar retouch varnish okay to use with an acrylic overtop of it. Would there be cracking later on? All I know is I have to really seal the paper so that it doesn't soak up the oil. How would you recommend I prepare this drawing?