Some how I skipped the next step which was to charcoal in the inner frame lines for the curved marble and painting with black and white to add depth to the piece in the marble veining. dry paint
After that step using medium and dark orange and yellow you shade the areas to be rounded with light coming from upper right corner. right and top of molding are yellow bottom and left of molding is dark orange and center on all of them is the medium orange color this is worked wet on wet to make a blending effect and roundness to the work. then paint in on the left and bottom with black on the cut line and paint on the right and top with white on the cut lines for shadows and highlights.