Thank you for your comment; much appreciated.
Steve,
The room is 33-ft x 38-ft and I use most of it. Here is an updated track plan of what it is now after a couple of spur additions and final configuration of the area around the turntable.
. . . and yes, I am having fun with the scenery. In addition to the pink foam, I am using the more traditional paper towel (blue) dipped in plaster, but instead of plaster I am using Structolite, and what a difference! About three years ago I learned about it from Jim Policastro, but had a limited opportunity to use it on my then (small) layout. Not this time!
Thanks!!!
Alex