I don't think of myself as an illustrator. I think of myself as a cartoonist. I write the story with pictures - I don't illustrate the story with the pictures.
Some manufacturers illustrate their advertisements with abstract paintings. I would only do this if I wished to conceal from the reader what I was advertising.
Interesting phenomena occur when two or more rhythmic patterns are combined, and these phenomena illustrate very aptly the enrichment of information that occurs when one description is combined with another.
I used to draw and illustrate, but I don't do that anymore because I just like to write. I like to leave the illustrations to actual professional illustrators.