So I did a layout. Nothing special, but my first one. I did create a plan before I started construction. It is 20 feet x 2 feet. I used hollow core doors and mending plates.
The layout has 60 linear feet of 2 rail track, in 20 foot sections, and uses 4 turn-outs to make 2 crossovers. There is a main-line, storage, and loading section.
Three loading areas were made from 1/8 inch thick plywood and painted a concrete color. There is one rail customer which is not modeled apart from the loading areas.