Improv is a must for this hobby, and while there's a ton of advice out there, I have a few go-to tools I use to make faking it not seem so fake.
Get my FREE adventure The Count, The Castle, & The Curse on DriveThruRPG: https://www.drivethrurpg.com/product/458350/The-Count-the-Castle--the-Curse?affiliate_id=1320102
Credit where credit is due:
Kevin Macleod:
Title: Alchemists Tower
License: CC BY 3.0 (http://goo.gl/BlcHZR)
Title: In the Hall of the Mountain King
License: CC BY 3.0 (http://goo.gl/BlcHZR)
Title: Local Forecast - Elevator
License: CC BY 3.0 (http://goo.gl/BlcHZR)
Title: Run Amok License: CC BY 3.0 (http://goo.gl/BlcHZR)
Title: Fluffing a DuckLicense: CC BY 3.0 (http://goo.gl/BlcHZR)
Redaf's Stuff:
Music: Funny Quirky Comedy by Redafs.com, Licensed under Creative Commons: By Attribution 3.0 License
Music: Chicken Picking Country Guitar by Redafs.com, Licensed under Creative Commons: By Attribution 3.0 License
Recorder Mii Shop cover: https://www.youtube.com/watch?v=9bFioQgjmck