At any given time, you are actively working on three projects: * The rewrite: This is a project for which you have already written a draft and turned in, and you will edit per studio / producer notes. * The first draft: This is a project you are working on to get to the studio. * Prep-writing: This is your next project on which you are doing research, brainstorming, developing characters, and plotting. In a perfect world, you get to knock out a first draft while your rewrite is under review. Prep-writing is something you do along with the other writing. Sometimes you spend 1-2 days per week just doing that. Or you devote your evenings for research. - See more at: http://gointothestory.blcklst.com/2010/12/business-of-screenwriting-art-of.html#sthash.ZOm1SAv3.dpuf