Fear not; and the God of mercies grant a full gale and a fair entry into His kingdom, which may carry sweetly and swiftly over the bar, that you find not the rub of death.
Your work isn't just to learn and say the lines. Your work is to figure out what the chatter in your brain is, that's going on under the lines. It doesn't matter whether you're speaking or not speaking because your mind is working the way your character's mind would work.