My high school wrestling coach, Coach Dale Ketelsen, only gave one piece of advice for when you step on the mat: wrestle. For the next two minutes, and for every other round in a six minute match, do nothing but wrestle.
When you’re in front of someone, do nothing but be there and think of nothing else. Just be present, and you’ll be fine. Like with wrestling, the more practice you do before being present, the better the outcome; the sharper an axe, the deeper the cut; the more firewood collected, the hotter the fire. The more you practice, the more your mind can be present while your body does the rest.
These links can help you practice.
Stage Presence
These are books. A few education-focused research studies show that learning from books can develop mental calmness and depth of learning more than videos, probably because it stimulates building neural networks and is more based on something deep inside of you than more easily parroted video media. And blocking off time to learn in quiet is probably an asset; a calm mind is often a source of creativity, and it can unlock your untapped presence that will serve you more in life than most things you see online (including this!). You can share the gift of your self with your audience, and they’ll probably appreciate that more than any trick you learn off Youtube: a good person with empathy and something to share is remarkable.
Also, search your community for workshops in acting, improve, speech, and public speaking (like Toastmasters). Comedy comes in threes, and “yes, and…” requires practice; join a tribe of people learning with you, and go from there.
Empathy, Active Listening, & The Art of Conversation
These are videos, and the topics serve magicians well. Not just on stage or with a deck of cards in your hand, but with useful and timeless people skills; if the audience likes you and feels respected, you’re already doing better than many people no matter how talented they are.