A Painter, to design from Relievo's must tinge the Surface of his Paper with a Pale imperfect Shadow; he may then proceed to dispose his deeper Shadows; and Lastly, To give his Work the finishing Cast, let him touch his principal Lights, but with a great deal of Adress and Conduct, it being these last Touches, which, at a Moderate Distance, do the soonest disappear to the Eye.