I'm not one to do a lot of mathematical or scientific calculation; it's not the math that fascinates me, but the patterns math discovers and how they continue to repeat themselves in nature.
To avoid mathematical calculation, one way to easily set up for a golden section pattern is the rule of thirds, meaning the painting gets set up by placing the image within divisions of thirds. Here I sectioned my watercolor paper into a grid of thirds, nine blocks.
|Grid placed on watercolor paper 20" x 28"|
|Gesture drawing placing preliminary image on the paper.|