A nice rudimentary guide to mixing some colours with acryllics. This'll be handy for when I'm rushing wands and don't have time to slowdown and think of how to get to the desired hue. Someone should do one that's all different kinds of wood shades.
One of the easiest and fastest ways to create a background is to simply squirt some paint onto your page then move it around with an old credit card or key card. Description from kristalnorton.com. I searched for this on bing.com/images