First try on a locomotive

[faraway]

... find airbrushing more effective for fading, as it won't result in excessive build-up around raised details. ...

Wayne, that is the key. A thin layer applied with the airbrush does not run into the corners etc. as it happens with a brush. Next time I will start with fading first and do it with the airbrush.

ps. I did also some black wash yesterday evening under a lamp. That is not a good idea. The sunlight shows much more details and shows ugly brush strokes I did not notice under the lamp.