Stories based on actual life have a "pre-built" narrative and create some of the very compelling films around. First, you should read, see, and research other real-life stories that were accommodated into books, movies, or plays. Life stories possess a very different feel to them than a fictional narrative.
Ensure that you find the actual life story of the principal character before agreeing with the project. If you aren't personally moved and inspired by what this character experienced, the script will not be the most effective as well as your main character's story will not get the attention it deserves. You can read more life stories via https://kotchmagazine.com/.
This means that you enjoy the narrative, no wait, you adore the story. Well, write down the essential points that force you to like it. The most important part is to interview! You want to interview as many people as possible who know the principal nature of your story, specifically people which were involved in whatever part of that individual's lifetime you're writing about.
When you've completed your interviews you may possibly find it extremely valuable to write a "character study" for every single main character in this script. If you have a description of every character trapped on your idea board staring you in the face every day you will end up more in tune with who each of these folks is and also you will be better able to portray them correctly.
Next, you have to outline your own story. Normally a real-life narrative is based on a specific event and/or certain time frame of the key character's life. So you didn't have to get into extreme detail regarding their life prior to the event or timing unless it directly affects the narrative and/or outcome.