Lindsay Lohan always feels under pressure when filming movies - but insists she is always cheery on set.The actress was publicly lambasted by the head of Morgan Creek Productions for her continued absence whilst filming 2007 movie Georgia Rule.But the Mean Girls actress has learnt her lesson, and has vowed to be more communicative with her colleagues in the future.She tells U.S magazine Marie Claire, "It's a lot of pressure, because everyone's depending on you."And your mood, when you go on set, everybody feels it. On a day when you're tired, it's important to just say good morning to everyone so they're kind of aware that it's gonna be a good day. (Freaky Friday co-star) Jamie Lee Curtis told me that."

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