Thank you sir. What I did was rather easy. I think I used a dark dbrown acrylic like Burnt Sienna to do some washes in the corners. Wherever dirt and oil might gather. You can do more or less. Just keep applying in small areas and wiping it back off. Ten I hit some of the high edges with dry brush od silver. To simulate worn-off paint. Again, you can do more, even adding paint chips.
