I started painting the first module over the holidays, make sure all the sanding you want to do is done before this.... then purchase either a roller or large paint brush to start painting,
I am using Dulux Vogel which was recommended by Rob from Aust N Rail because after applying grass and other scenery, Vogel looks like dirt and earth colour making any small gaps in grass and/or gravel not stand out, if the board was white, light green or just ply colour.
(Paint Code)
DD 31N
G 5N
M 1N
W 9N