That is awesome! Have you thought about speeding the process by making some larger stencils based on the same measurement size (3inx3in, 1.5x6in, etc.)? Or maybe a grid of 1x5in squares separated by 1.5in spaces? That might get you to the next screen a "bit" faster . Keep up the great work!
we actually have already painted over this wall... the wall as a whole never got finished.. a couple friends of mine got behind in time and couldnt get thier pieces done.. so we decided that the whole wall needed to be erased and redone..