Bolt Action Jungle Terrain

To go with my Japanese, Chindits and USMC I have started work on some jungle terrain. Generally following the Terrain Tutors Burma Build on youtube.  I am using what materials I have. The bases are hardboard cut into different sizes and shapes.  I then cut up and glue on a polystyrene ceiling tile, put filler in the gaps and round the edges to smooth it out.  Glue on sand and small rocks for texture. Finally undercoating in bitter chocolate masonry paint.  Still lots to do