When I traveled recently through Utah, I came across a diner with some wooden bull's heads on the wall. I scribbled their basic layout in my notebook as an inspiration for my own version of it.It is very easy to build this wall decoration. You can built it in any size (mine is approx. 1m/3feet from horn tip to horn tip) and use any material. I took old scrap wood for my version, but cardboard would surely look very nice.