Visible Machine Hemming: There's probably a more efficient way to do it, but (shrug)

One thing I hadn't gotten the hang of until recently is having a clean finish on my hems when I do it by machine. I've gotten plenty of practice sewing pants over some months and with the extra practice comes a raising of the bottom line for what I consider acceptable quality. In this post I'll discuss what I'd been doing wrong, and what I've done to rectify the method and get that neat hem.