I decided to sketch out a simple garage building. I made sketches of two floors and a front view so that I could make the model from different angles. Thanks to some scaling and moving I also matched the grid scale on the pages with the grid in Blender so that everything could be to-scale.
I also noticed that the backgrounds start to go all wonky when they intersect. Maybe there is a way to make this look better, but I think this will do for now, as I will mostly be using only one page at a time to model.