I have a scratch brass model of Huntingdon and Broad Top Mountain 2-8-0 #37 painted and ready for weathering. Over the years I've weathered a good number of brass locomotives using Floquil weathering paints and an air brush. Since then the art of weathering has reached new heights as a result of new materials and techniques. Before weathering this model I've decided it may be time for this old dog to learn some new tricks. As jumping off point I'd like to look at several videos on the subject. What videos have you found most helpful.
#37 at the PRR Huntingdon, PA station in 1952 - the look I want to capture - (note the water line on the tender)
The unpainted model as scratch built by the late Frank Miller
H&BT 37 almost ready for weathering