above, i'm drawing foreshortened circles, below, the PBS show "Secret City" with Mark Kistler, that taught me how. you know how it's easier for kids to learn a new language than adults? Mark demonstrated all kinds of principles i didn't come across again until art school, nearly a decade later. to whatever degree i handle perspective, it's at least comfortable to do so, and has everything to do with seeing this show, as a young'un. check out that neat opening crawl, the sci-fi drawing outfit, and how enthusiastic this guy is!!!!!! he sometimes says: "are you ready to BLAST across that page?". hell yeah! thanks sir !
........and Marks usual sign off: "DrawDrawDraw! Practice your drawing!"