Thanks man.
My painting process is to complete a precision set of the blue markings first. Once that is done I paint in all of the white chips and scratches onto the blue markings. After that I apply the "dirt". Firstly I mix in a little black paint into a lot of water (maybe a 10 to one ratio of water to paint....depends on how dark I want the dirt), then brush this watery mixture over the area I want weathered (in this case all oh him!). Do this one area at a time, eg painting on the lower leg. Leave a couple of seconds then wipe off with a cloth. This loaves a general grime over the whole area with more dirt in the various relief areas. Of you want more dirt around the boots or lower legs etc then just repeat the process until you have built up as much as you want.you can do this with multiple colours and shades as required. When I think I have overdone it then I strip the dirt back a bit using an eraser. Seems to do the trick! Finally I make a more concentrated "wash" (increase the proportion of paint to water) and apply this to detail areas where I want a little more definition (such as around the shoulder pads, belt, boots etc).
After that you should be left with a battle weathered trooper!
