Shyness is something that can absolutely get over it. all actors were shy and some are still very shy. You just need to practice to get on the stage and talk and perform in front of people and with time it will get much easier for you. Take a stage acting class, acting school, they will work on that with you.
Can I wear jeans to an audition?
You don’t need to dress like you’re going in for a corporate interview here. Your clothes shouldn’t be a wrinkled mess, but you also shouldn’t be wearing business attire to an audition. A good pair of jeans can go a long way, and it’s worth investing in a pair for auditions alone.