His painting style is not mine, at all, but it's interesting to try his method. He paints in lots of layers, but I wouldn't call it glazing. He starts with the lightest value (leaving some white of the paper) and works toward the darkest, not necessarily waiting for things to dry but using the same color(s) over each other to build up the value. I tend to be a direct, slap-it-on painter so this takes some restraint on my part. On the other hand, he uses lots of colors, often letting them mingle on the paper which is on an easel set quite steeply. He also talks a lot about various elements of composition such as value, hue, value, placement of elements, value, focal area, etc. So this is what I did today (at the bottom). It's from my head and I see I have a nice, dark worm moving through the middle ground, not an unusual occurrence for me when I make something up. Basically I'm happy with what I did.
Here are a couple of photos I took during Don's demo. The right one is when he has put on a couple of layers of light value and the left is where the painting was when we left today. I assume it's finished, but only he knows.