Quick upgrade for a Bachmann cattle van.
This is a factory-weathered version, with tampo-printed patches of buff coloured stains, which looked OK at first glance but the overall effect lacked depth and tonal variety. So, I started with a dark acrylic wash to stain the seams between the planks, followed by airbrushed 'dirt' over the chassis and body. Finally, various shades of off-white acrylic were dry-brushed over the lower sides to mimic disinfectant stains. All done in 45minutes or so.
Now, back to that pile of editorial work...