How to Set Up Milestones and Timelines for Artists

I always ask for payment after uh the files are sent like the final files when the work is done basically I tend to work better when I know I'm gonna get paid like it has to. Some people prefer just payment in advance and then I suddenly start slacking on the work that looks really bad on me, she says. Do you have any horror stories of people refusing to pay or ghosting you when you've already done a ton of work? If so please share them with CNN iReport.