Hi there,
This is a big question. I can assure you that no wrriten response will be sufficient as there's simply too much to cover - as such, I highly recommend you hire a coach!
That said, keep in mind the following:
- Remember that most casing tips apply here (i.e. be very clear+focused on the objective, ruthlessly cut out information that doesn't help you meet this objective/question, make sure to thinking + communicate in a structured way, etc. etc.)
- Practice/simulate this as much as possible beforehand...getting a coach to help you run through scenarios + how to react in inevitably challenging moments will do a world of good.
I have a number of written case I'd be more than happy to share with you! What I generally do with my candidates is, give them a written case x hours before our scheduled session (adjust # of hours based on the specific interview they're going to have), and then review their work during the session (as well as talk through tips+tricks to get better).
Other helpful Q&As
https://www.preplounge.com/en/consulting-forum/scenario-interview-presentation-prep-9325
https://www.preplounge.com/en/consulting-forum/how-to-practice-written-case-interviews-9199
https://www.preplounge.com/en/consulting-forum/case-interview-9228
https://www.preplounge.com/en/consulting-forum/how-to-practice-written-case-interviews-9199