write three in-depth scenes that helped create, perpetuate, and escalate the problem your protagonist will be forced to deal with when your novel starts. Because the story-specific cause-and-effect trajectory that will propel your novel from the first page to the last doesn’t begin on page one; it began with the origin scene you wrote in the last chapter. The first page of your novel, on the other hand, probably takes place somewhere near the middle of said trajectory.
