“Look for rhythmic lines, not just in individual clouds, but in the patterns clouds make. These lines will add energy to your painting.”
Michael Chelsey Johnson, Clouds
For some reason “rhythmic lines” makes my brain run to the click-clack, click-clack of rail lines, and de-dah, de-dah, de-dah of poetry lines, rather than jazz, which is probably more like the rhythm of clouds with an underlying structure but full of surprises.
In the V&A Museum in London there’s a wall with cloud studies by Constable. I find it very assuring that he spent so much time trying to “get clouds right”.