Dem Bones, Dem Bones, Dem Dry Bones...
...is how I always think of perspective drawing. It's a bit tedious, but it underpins everything, like a skeleton, and the skeletal frames of my drawings usually have rickets, hairline fractures, and pretty advanced osteoporosis. I'm TRYING to get better, honest - but my eyes glaze over every time I have to measure anything. So, K Hulsey, whoever you are, I love you. You have created a perspective tutorial that even I understood.....