Minding the gaps and details

Much like me, if I stay in place too long, buildings in the desert accumulate a good build up of rubbish around the edges. Also a bit of stuff around the bases of the buildings will allow the hiding of any remaining gaps, or anything else I don't like the look of. I applied a PVA + water solution (40/60ish) along the edges of the buildings with a needle nozzle so it doesn't slosh everywhere.

Then I sprinkled the remains of the finer bits of of ballast and sand left over from the rubble-isation (I can event words if I want to). It helped to blow gently towards the buildings so that the material built up in the right places. Then just repeat, I tried to use slightly finer particles towards the end. I think it worked better above, but not so good on the left. On the left I used too coarse a material - not for the first time.

Once dry, I wash over several times with the brush water, sometimes taking a bit out and darkening it if I run out of patience with how long it's taking. I've also started thinking about a few minor pieces, road signs, barrels and boxes, minor trash left lying around.
The sand bags are living dangerously. Little pieces of evil that are a nightmare to trim, don't stack and were clearly created with the sole purpose of making life difficult.

I've seen some awesome sand-bags created by other modelers, but for me they are definitely a work in progress. Also, I think the whole thing needs walls. Maybe walls will be easier than sand-bags.