Can you paint a square or a rectangle? That's really the basic element.
I have a step by step I worked up as a guide for my self about fifteen
years ago that I can scan, but I'll have to dig it up after work. In
the mean time, here's figure I painted in '99. I started with the lime
green base, then painted the dark green dominant color in blocky,
squared off strings, capping them with abstract star shapes in some
cases. Then I layed in the secondary dominant, red-brown in this case.
Then the subordinate color, which is just the dominant color, but
painted in little stripes, was layed in. This was done with some
patience and a very small brush. You have to paint the stripes so that
they combine to create another splinter patch, but they also bleed
into the brown. I bled it into the green as well, and I think I may
have darkened it so that it would contrast on the main green patches.
Practice on a card or something. It's really not that
hard, you just have to take it in steps, by color.