Learning new weathering skills with old models

I took this Humber Pig off the shelf where it was moldering away to try and learn some new weathering techniques. It seemed like the perfect use of an old model. I looked at some pictures of Pigs in various states of decommission. I did not want to go totally derelict! Tried filters, mixed spot and complete washes, rust, grime, rain streaks and others. It did not, by any means, come out perfectly; but I got to make mistakes on the old Pig and learn how to handle these effects better so I could apply some of them to my current builds.

I thought you all would like to see a way you can make a silk purse out of a sows ear and learn something along the way - use those old builds to learn something new - armour recycling!!!