When a young actress accidentally murders her abusive acting coach, she discovers a new acting technique that helps launch her career, but grave consequences lurk just around the corner.

Your protagonist kills someone just as their career is kicking off ... then what happens? What is the goal of your protagonist, and who is trying to stop them? (I'm assuming the stakes are that she could get caught for the murder?) Can you tie the murder in with her rise to fame a little more strongly, so they're not just two entirely separate events?

Hi,

this has legs. I see similarities to Black Swan in a way - which is a good thing. Maybe you could have her kill her coach in self defence before an audition. Using her emotions from her recent actions could land her the part, hence launching her career. Or maybe the audition requires her to re-live the murder in a fictional setting, hence it brings real emotions to the surface, making her audition incredibly real. I think the evolution of the plot then centring around a murder investigation amongst a rise to fame could make for a good story.

"After killing her acting coach, a struggling actress wins a coveted part in a major blockbuster when she gives a chilling audition fueled by emotion, catapulting her into the spotlight and also under the eyes of the Detective investigating her coaches murder."

Bit long...but that's my attempt.

I like your title "Method"

Good luck.

Perhaps her acting coach had her practice a scenario in which she was to recall a certain emotional moment, but it unintentionally mimicked her part in a long ago death. She murders him to cover up a death which, ironically, is later discovered to have been only a false memory.
Title: "Falling A Part"