In this first work I am to make a meandering river eating away at a huge area (12x2km) of raised (about 12m) sandy ground with dunes (and some layered sand colors). I usually make maps, but tried this procedurally, so I had to find a way to mask the eroded areas in. Simple shapes, warps and masking....
I still have to hear if they want veggies, but I think they do for this era (interglacial warm).
First and second test, more to follow.