Interactive Paints on top of Solvent Varnish?
I recently pulled a painting out of my closet that I did more than a year ago and would like to work on it again. No, I don't expect the paint to become interactive now that it has cured for so long. The problem is ... I don't recall if I put only an isolation coat (fast medium/fixer) or if I also topped it with Invisible Solvent Varnish. Can I paint on top of the varnish with the IA then do another isolation coat, and then Solvent Varnish again. This is a wrap-around canvas. Is there some way I could do a test on the side of the canvas that would determine whether or not solvent varnish has been applied. Next time I will write on the stretcher bars what I have done!
Comments and suggestions always welcome