That odd shaped hole in the lower half of the wall was made so I could swing a hammer to install the gang box. I think that if you buy one of those battery powered hammers you should lose your man card, but it sure would have come in handy today.
I think writing on a vertical surface messes with Avery's sense of direction. Every number was written backwards, except the zero.
I let the kids write on the wall before covering it. I told them they could do anything they wanted BELOW the pencil line. Notice how the bunny ears test the boundaries.