ML, everyone has given you great ideas. If it was me and I was going to start adding a bit of better scenery I would definitely get rid of the carpet. I start with bare plywood. I add Gypsolite ( my preference ) to the plywood, paint it earth tone with Woodland Scenics earth color then start adding my turf, shrubs and trees. Myself I get all my scenic supplies from Scenic Express. I have also watch the very good how to videos Woodland Scenics has put out which helped me. And as I go along I find better ways to do scenery and new products to try. Doing scenery should be fun and what you can do if you want to is limitless.....Paul