Any advice for someone who wants to get into Music Theatre?

please, anything could help. i would like to hear your pearls of wisdom :)Any advice for someone who wants to get into Music Theatre?
Act like you know what your doing, don't act like a beginner but don't be cocky. Every move you make with dancing you need to exaggerate because that's the only way to get the actual affect when on stage and when wearing make up for a show put gallons on because those spot lights make you look pale and dull. Always carey some sort of facial expression on your face weather your speaking, singing, walking, or dancing. And when you go home practice what you've learned in class so that next time you go there your fully prepared and have everything memorized.Any advice for someone who wants to get into Music Theatre?
if you don't sell it, the audience won't buy it. and never ever give up.
Never give up, no matter how many times you don't get in a show or don't get a big part. And get a voice coach. My voice coach really helped me improve how I sing and eventually I started getting cast as the leading role. Good luck!