Next up is the application of oil paint to bring the model to life and give it a worn grimy appearance. For this I used oils from Mip Productions awesome 502 Abteilung line. The colors can be seen in the image below. Basically you take some odorless turpenoid on a brush and thin a little of the dark mud and work that into the recesses. Then add some dabs of blue and rust then work it all together with a thinner-filled brush. A very simple and quick process that yields wonderful and varied results.
Next will be to highlight panels with lighter/darker oils and work on blending that rust better.