I did something similar when I started doing little videos to practice for my school events. Same experience. At the beginning — awful! ha, ha. Then I got better and I saw three little things that made a big difference. 1. Wear a button down shirt. 2. Sit up straight, shoulders back. and 3. Smile all the time. The last one was weird because you don’t think you can smile and talk at the same time, but you can. I actually wrote an article on Medium about it called, It’s The Messenger, Not The Medium. I only did it a few times though. I’m going to take your 30 day challenge and see what I think after. Thanks!