I started with the scenery on my logging railroad by planting some trees. Since the station is located deep in the woods, I set many trees to the back ground and some to the fore ground. This gives the look of a small station, settled on a glade.
I used needle and leaf trees to set up a mixed forest as it is typical for the palatinate woods. I just got in mind to use the airbrush and some green paints to mix up the bi-colored forest a little more.