Great writing. That's the key to a great story.
Screenwriting
The most important thing to secure for your film is an excellent screenplay.
Pitch Books
Pitch books need to be as terse as they are exciting. Strong copy for these is vital to close any deal.
Business Plans
If you're seeking funding from more traditional lenders, you'll need a professional and detailed business plan.
Promotions
Advertisements, crowdfunding campaigns, press-kits, and all other promotions will need succinct and effective text.