Artist Gay Kraeger's tips for making trees with a "tree machine" (Sponge) from Strathmore's 2014 Online Workshops. See this free video lesson and more: http://www.strathmoreartist.com/artist-studio/register/
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.