Latest update pictures attached. I have decided to focus on scenery on an empty corner of the layout. Many things were learned here! Basically, I followed the methods shown in Eric Siegel's videos. I would change a few things next time but overall I am really liking the results. The pics below show the progress. It is pretty much complete with the exception of more plant life and debris.
Next, I am planning to continue track ballasting and begin fascia installation.
Thanks for looking,
Chris