I like to look at these reports and see how many pages of script I have without the presence of the protagonist. More than three, and I double-check focus because that much time away from the main character worries me. Think of your protagonist as played by a superstar with a huge ego. Every moment the superstar is not on screen is a moment you must defend. You will find yourself doing this as infrequently as possible.
Movies are bigger than life.
Make the stakes bigger, the threats bigger, the payoff bigger. Crank it up. Movies are bigger than life. These are some of the common mistakes my students make over and over again. In my first draft, I still make a lot of them myself.