What's Up the Wadi?

I have undercoated the wadi sections with a couple of layers of the old Homebase emulsion paint that I've used for all the desert terrain, so they are looking a bit like I've dunked them in custard but should be ready to drybrush and weather tomorrow. After I've done that, I'm going to add some clumps of dried up reeds and weeds, along with some other detritus like old rusty barrels, so that they look a bit more interesting. I'm really busy tomorrow, however, so I don't know how much of this I will get done by the end of the weekend?