Just started a new build last week, decided to do something a little less polished and rebuild and old model of mine, rat style. I started with a box of partially assembled and badly painted parts, stripped them with easy off and got to work. This is my first time simulating rust and rot, but after reading about different techniques and experimenting a bit I feel I have a pretty good handle on it.
What I started with:
Stripped, dented, and "rusted":
As it sits today:
Body was painted with Flat brown, coated with spots of elmers glue and hairsray, then shot with sage green. Rust spots were opened with tooth picks and sandpaper and detailed with drybrushed flat tan and tobacco dust.
Next I have to modify the frame, bed, and interior tub to get it sitting lower.