I have however managed to complete phase two of the North African terrain, as well as the mud walls. The latter took a lot more time than I expected, considering that I intended them to be a side project.
I decided that I wanted doors that could open or be removed, so I imbedded a magnet in the wall and the base, and drilled a hole to accept a nail in the door.
I used a thick plastic-like cardstock material for the bases.
After painting the walls with a thin coat of wood filler, I painted them a dark brown gray.
The bases were painted with another gritty wood filler, then painted brown. I drybrushed them with a mud color, then stained them with a MinWax wood stain. The walls were painted/drybrushed with a layer of Martha Stewart crackle specialty finish ("Sandbar") I bought years ago.
I also started a chapel for the African village. The roof has been very problematic so it isn't finished yet.
Finished walls and planters.
After all the planters were complete I glued in the trees and cycads. These are eBay palms with some airbrushing to give them a more natural color and a little depth. The fountain received some clear resin to mimic water after it was painted and the decorative tile (a printed border) glued in place.
Next up for this project is a market, which will be a few buildings with 'storefronts' and some free standing stalls.