I now create my Ladder to the second level. I cut an opening and then ran some wood up the side. Cut a bunch of 3 inch wide strips and started gluing them on.
With my dowels paint dry I glue them on and have a supported second level.
I then cut out a Garage door. Glue a couple pieces of wood up there to create a guide so it looks to support itself (even though it will not when in the fully closed position and painters tape works wonders for pics as it removes easily).