I remember in earlier days of Tesla, Elon Musk was not really great at his presentation skills. Looking at him I was like I might just be able to pull off my presentations like him. Kinda helped with my confidence.
People really don't care. They might chuckle for a moment if you really goofed up but they forget very fast. It's us who amplify what others might be thinking. Someone said it rightly:
We suffer more in imagination than in reality.