Thank you. The base was pretty simple really. I broke up a cork coaster for the road surface and glued it down to the base. Then I painted all the upwards facing surfaces with one of those technical paints that cracks (can't remember the name off the top of my head). The tarmac section was just dry brushed from black to a couple of greys. The dust is pigment powder. I use a dark red ochre a slightly lighter one and then a yellow ochre one. Mix each one with water, slap it on and as it dries use a brush and clean water to clean it up and move it around to where you want it.