Ask How do you protect your work on a freelance platform before payment is confirmed?

[Brendan]

Sending your finished work to a client before they have paid can be a very scary thing for any new freelancer. You want to show that you did a good job, but you also do not want them to steal your work and run away. Some people use watermarks on images or only show a small part of the file as a preview first. To keep your work safe from dishonest buyers, what methods do you use to show progress without giving everything away for free?