In one particularly embarrassing example, I once spent dozens of hours on a project for a drawing class, only to find I’d included perspective distortion on the

In one particularly embarrassing example, I once spent dozens of hours on a project for a drawing class, only to find I’d included perspective distortion on the entire image from the angle at which I’d been viewing the canvas. Luckily it turned out to be a good-looking effect, and I got a good grade by passing it off as intentional.