Write the introduction within the first 10 pages by introducing your protagonist and supporting characters, establishing a way of life, and setting the tone and style. Also introduce any antagonists and suggest a conflict that could disrupt the protagonist’s routine. Suggest that something is at risk for her, plant a subplot and divulge any significant back story.
Write the catalyst for the first conflict no later than page 11. This needs to be a critical piece of information or an action that forces the character to make a choice and take action. Show your audience what your character desires and make them question whether she will get it. This incident and its results run up until about page 30.
Create your first major plot point at the end of the first act by pushing the action into a new direction. Raise the stakes and further threaten your character's goal. Make it clear to the audience what your protagonist wants and prepare them for the obstacles to come.
Create a "snowball' effect of action in act 2 (pages 30 to 80). Test your main character with seemingly insurmountable odds and show the audience what she will endure to get what she wants. Let her fail at times and also let her succeed. Create suspense by laying strong blocks to your character’s goal. Also plant future conflicts.
Begin plot point 2 at the end of the second act. Raise the central question again, as well as the stakes. Push the action into a new direction, and force your protagonist into a risk and a choice. At the end of this act, remind the audience of a "ticking clock" and either raise the protagonist’s morale, or completely crush her will. Make the opposing forces stronger with each scene, but balance it with the hero’s successes and failures.
Start the third and final act near page 90 and conclude it around page 110. Make your protagonist face an upward battle or a downward sprint to the climax. Make your protagonist either give up all hope and then be inspired back to action, have a breakthrough discovery, overcome an internal obstacle or confront the villain.
Start the climax around page 111. Make this scene the most shocking of the entire film. Make your character an active participant and the villain extra threatening. Create a fast pace with surprises, impediments or miscalculations that force the protagonist to make quick decisions. Make the protagonist either solve her problem and achieve her goal, or make the problem defeat her.
Create the resolution around page 115 and run it until the end. Quickly tie up loose ends and establish the effects of the climax. Make it clear what your protagonist has lost or gained and show any changes in her character. Suggest what the future will be like for her and reveal what happens to the villain.