How can I add a celebrity to my story? (example: Sharon Tate in Once Upon A Time In Hollywood)

Hello, Peliplaters! I need help from film buffs with this. For two years, I've been writing a story that touches on the topic of the modern music industry from the point of view of some young people. Something I want to touch on carefully and it's been a delicate process because of the news that has been happening in the entertainment industry, and I was forced to rewrite the novel more than four times. But that's not the point... As you know, Tim Bergling (aka Avicii) was part of my childhood and my first famous crush. So this final version of the novel I'm writing is not only a youth drama about the entertainment industry, but I decided to turn it into a tribute where Tim had a better fate, manages to recover and be happy. Now... think about it... What comes to your mind with this? A young creative boy wakes up with the tragic news that his favorite celebrity passed away in a tragic way, and he misses her so much that he decides to write a story where it has a happy ending. THAT'S RIGHT... Once Upon A Time in Hollywood, Sharon Tate and Quentin Tarantino! Sharon's family loved her portrayal in the film; and a friend, upon hearing that I was writing a story about the reality of young artists and the fact that I still miss Avicii so much, told me to do the same thing Tarantino did. Even though my heart told me to do it, as I was writing I started to think: Am I doing it right? Tim doesn't want to be remembered as a character... Won't I be criticized for that? Is this enough with documentaries, interviews and follow-ups? Now... I'l ask YOU : HOW DID TARANTINO MAKE SHARON, FAR FROM BEING SEEN AS A CHARACTER, BUT AS A REAL PERSON, AND HER HAPPY DESTINY FELT NATURAL? So doing the same with Tim (even though I have the story structured, it doesn't affect him during the rewriting) Sharon Tate Margot Robbie Quentin Tarantino Avicii