Now it's the turn of the MIG Dark Wash, used in the airbrush without any thinners, but at 25psi. Once again, a thin coat, and then worked downwards immediately with a dry 1/2" flat shader brush. This will leave an accumulation of 'dirt' just above all of the horizontal ridges and tone down the previously applied ComArt Light Dust. If necessary, the downward movement can be applied several times to achieve the required result.
No attempt was made to mask underframe or roof, allowing the overspray to impart a little discolouration to what was already there.