There's not much to say about acting but this. Never settle back on your heels. Never relax. If you relax, the audience relaxes. And always mean everything you say.
James CagneyLearn your linesโฆ plant your feetโฆ look the other actor in the eyeโฆ say the wordsโฆ mean them.
James CagneyYou don't psych yourself up for these things, you do them... I'm acting for the audience, not for myself, and I do it as directly as I can.
James Cagney