Hi Mark, and thank you for the comments!
Well I guess I use a quite straightforward method with humbrols. The colours I mostly use except for the basic colour ( red, blue, yellow etc ) are Flesh, Natural wood and Black, I often mix these in to make the colour not too bright in value. I also try to keep the first colour shade quite dark and not too saturated in order to give the highlights more brightness. I mix the colours with Humbrol thinner, but not too much, I like to paint with a medium "thick" paint, since too thin paint tends to give an uneven layer that doesn't cover enough.
I don't use washes or "drybrushing", I paint more like traditional canvas painting.
Best Regards!
Andreas.