To dream that you are varnishing something, suggests that you are trying to cover up some imperfection or mistake. It may also mean that you are putting up a front. You are trying to be someone other then your true self.
To dream of varnishing anything, denotes that you will seek to win distinction by fraudulent means. To see others varnishing, foretells that you are threatened with danger from the endeavor of friends to add to their own possessions.
When you dream you see someone varnishing furniture this denotes a loss to you from friends who work for their own gain. If you are doing the varnishing then it shows you will win the battle but lose the war because you used less then honest tactics in your endeavor.