If you are new to decorative painting, sponging is a great place to start. Sponge on glaze or sponge off glaze to create the custom look perfect for you. To cover a larger area in less time while still delivering beautiful results use a sponge roller in place of the natural sea sponge.
And I like the copper not just in the idea of props and such (I tend not to think we need that, the world isn't that kind of world) but as a quality of Leonardo's house: beaten, patina-ed, hard and sometimes reflective. Warm but hard.