Thanks for the link Dwight, a great read.
I have only just bought an airbrush, I might try those techniques with the next kit I attempt!
In my pre-airbrush days I developed a layered drybrush style I used here, starting from black and working upwards through greens to earths and finally silver highlights. Makes a great texture on the kit that mimics steel. The other beauty of it was I didnt need to stop between layers, the tackier the paint the more visual the effect. Shows my younger impatience I guess!!!
Ian