He's an Academy Award-winning screenwriter. A celebrated filmmaker of one of the most acclaimed action franchises. If there's anybody an aspiring screenwriter should be getting advice from, it's Christopher McQuarrie (The Usual Suspects, Mission: Impossible). Are you an aspiring screenwriter? Today's your lucky day: McQuarrie took to his Twitter account to deliver a passionate thread of advice for screenwriters looking to sell their scripts. There's just one potential problem with the advice. As McQuarrie puts it, "You won’t like the answer, but here it is: You’re asking the wrong questions." As you …