I have a slightly beat-up brass-plated or brass lacquered bed that I'd like to sponge-paint. The bed is *not* real brass, but I don't know the difference between brass plating and a brass lacquer finish, or if this matters in painting over the surface. I notice Henry in MI had some suggestions several weeks ago for painting over a brass-plated fireplace. Should I use the same method of sanding with 320-grit sandpaper? And should I stick with enamel paints? Many thanks in advance for any tips!