Interesting article, most applicable to novices IMO.
I feel the layers are applied on these example figures far too heavily.
Sorry to step on your toes but....
How do you apply paint less heavily and still quickly?
With a lightly loaded brush, using thinned paint.
For speed and effect I recommend mixing two techniques.
Stain over pre-shading, paint in lo-lights and then damp brush hi-lights with a big brush - humbrol red handled 2 or bigger. Quicker and the main skill involved is in judging the amount of paint on the brush. HTH someone.