A method I learned from Dwight Ta-ala was to paint your base coat and then do a really uneven white wash. In fact, check out his picture in this thread http://www.finescale.com/fsm/community/forum/topic.asp?TOPIC_ID=29729
If your washes are too thick, just add more thinner. Go real light and build it up until you get that look And yes, the real think was put on with brooms, branches or just thrown on with whatever they had. Really made some uneven jobs
Jason
"There is a very fine line between "hobby" and "mental illness." -D. Barry