Just like other kinds of artists, most actors (even when they are amazing) and singers think that they are horrible. That's just part of it. As artists, we are all filled with self-doubt, but that self-doubt is part of why we improve. It's a blessing and a curse.
My eldest son is heavily involved in theater, as are a number of his friends. I know many many theater kids. When you get them all together they are loads of fun and seem very confident. But in reality, when dealing with the public many many are very shy. They can get up on stage and lay it on the line for hours, but the meet and greet fills them with terror. It's different when you are acting, being a character. In all honesty, you are just too busy to think about the audience. You are in the moment with the rest of the cast and crew. Don't fret about it, just do it. It may or may not help you to get over your shyness (it did my son), but it will be an amazing experience regardless.
Have fun!
My eldest son is heavily involved in theater, as are a number of his friends. I know many many theater kids. When you get them all together they are loads of fun and seem very confident. But in reality, when dealing with the public many many are very shy. They can get up on stage and lay it on the line for hours, but the meet and greet fills them with terror. It's different when you are acting, being a character. In all honesty, you are just too busy to think about the audience. You are in the moment with the rest of the cast and crew. Don't fret about it, just do it. It may or may not help you to get over your shyness (it did my son), but it will be an amazing experience regardless.
Have fun!