It shouldn’t come as a huge surprise that James Gunn writes everything down before he shoots it—the guy has a seemingly endless reservoir of information about the way he filmed things, what music fits where, and storyboards. But now he’s shared a bit from the packet he gave Marvel when he was trying to get the Guardians of the Galaxy directing gig.
Source: io9 – The Opening of Guardians of the Galaxy Barely Changed From James Gunn’s Original Pitch