Some common mistakes that people make when selling online include not setting their expectations appropriately, not creating a compelling sales pitch, and failing to entice buyers with attractive pricing options. It's also important to set up accurate shipping information, provide clear instructions for bidders on how to pay, and keep track of comments and feedback left by buyers. If you have any questions or concerns about your sale process, contact the Podia support team immediately so that they can help resolve the issue as quickly as possible.