For me, the focus is on a mixture of techniques when starting a new screenplay. I begin with seven little paragraphs. They include the balance, catalyst, big event and so on – you know… the normal elements of story but not necessarily in that order. Once those gems are complete, I create an outline of events that need to happen (along with their complications), to get me to each of those elements.
I’ll admit that once I start writing new twists and turns sometime develop and then it’s back to the drawing board (lol).