I decided to work on my master copy of the Bouguereau portrait, At the Foot of the Cliff. After establishing the image in darks and brights, I mix lead white and Titanium with a transparentizer that is no longer available. I apply a layer of this half paste and work it into the pores of the canvas. Next, I work it with a soft but firm fan brush in order to remove all but a film of white. I then apply some adjustments where needed with the same half paste only I apply it carefully in a way that brightens and corrects. I also, very carefully, use a cotton swab or brush to lift off more white where more dark should remain or also to correct in areas where needed. Then I buff to a high sheen. This will be the surface where I will begin to add color by painting and glazing. I clean my brushes and cook supper. Hope your painting brings you joy. Shalom, Diana