A few weeks ago I can across a great airbrushing channel on You Tube showcasing some amazingly easy to do airbrush weathering techniques.These were for creating some great realistic looking weathered tanks, and they really inspired me to get off my butt and work on some of my Super Heavies.
The reason I really like OPN's YouTube Channel is because IMHO he presents it a way that makes it easy for a layperson to understand, and follow along.