It's a cliché, but if they're really your friends, they would never make fun of you. It'll probably be hard getting used to not hiding behind a mask, so it might be easier to do it in small doses: maybe try uncovering your face during a private hangout with just a few friends, and see how it goes. If you feel comfortable talking to one of your friends about your concerns, they would probably be happy to reassure you! In the meantime, it may boost your confidence to try some of the suggestions listed in this article.