Keep the Door Open. At least some of the time. This is about nipping stage fright in the bud. Go ahead and let people hear you play. So you make mistakes? It’s fine. You’re making music and music is to be shared. Also, when people find out you’re learning to play, they’re going to want to hear you play something. Go ahead! The more often you take advantage of these opportunities, the more at ease with an audience you’ll become. That’s the idea, right? You want to avoid becoming a person who has “been practicing” but who is still reluctant to play in front of others.