Totally awesome antique grand piano stained glass pattern. Pattern supplied at 40 x 33 inches which means you must have a large format printer, or know how to tile the printing or take it to a quick print place... and you should put this in a zinc and a wooden frame.  There are plenty of small pieces (keyboard black keys are done with copper foil overlay, or real glass, either way), so it probably doesn't need reinforcement, but a band of copper flat tape from the top of the panel over the piano lid to the bottom bending with the pattern might be a good idea. (I probably wouldn't do it however).