The fun and saving grace feature of Yupo allows one to work and rework a piece.  One can kill a beautiful piece as always, but inexperienced artists can try any type of form, shadow, line, color, etc. and get effects without totally committing as with typical W/C.  Great way to learn.  Band aids and Dum Dums was such a piece for me.  Here it is in its final form.  It is a memory of my own, but has many implications.