Drawing is one of human basic needs, especially drawing on the wall. The wall is big, large & gives lots of space for expression. Cave men painting on their cave. Egyptian created stories on their wall. People doing graffities on public walls.
Similar to what Arwen & Leia did to our bedroom wall. It's about basic needs for freedom & expression :)
Kids & Their Painting from Pinot on Vimeo.
*CMIMGIW = Correct Me If My Grammar Is Wrong*