For the few brave (foolish?) souls who wander over from the Reaper Minis forum, here are a few links to really good articles elsewhere on the web.
You know, just so you don't think I'm a completely psychotic libertarian.
http://chestofcolors.com/how-to-make-autumn-bases/
Higher highlights and deeper shadows!
Here's a painting challenge: Strap a palette to your forearm and a parachute on your back.
More base information.