Chris Wastney
check out this playlist that Rolando Vega
has of his customer stories! He does a great job of capturing what the company was like before they started working with his team, what they did to implement the work they did with his team, and the state of the company after implementing what they started with his team: https://www.youtube.com/watch?v=Efxt_f4fvlE&list=PL3QUuvWserdbILRdg4jjhMJlESTd8SP3q
A couple resources that could be helpful here:
Course: How to Create Amazing Case Study Videos
Course: Crafting "Selling 7" Videos that Convert (check out Lesson #2 in particular)
Resource: Selling 7 Script Templates
Article: The Selling 7: How To Create Customer Journey Videos (+ Examples)