Note: in this case I declined all potential technical problems (like troubles with api/server/specific service/infrastructure/button/whatever) from the start because generally that checks firstly.
I supposed how the main problem could be decomposed on the smaller ones.
https://www.figma.com/embed?embed_host=notion&url=https%3A%2F%2Fwww.figma.com%2Ffile%2FwtJabVkhJLfFbidbS61EF8%2FDrivesafe-(Community)%3Fnode-id%3D302%253A31
Note: Generally, I decompose with the team after all discussions and challenges, but in the email with case study was the hint “Prepare at least one one example ticket - can be for one minor feature only” and I decided to show it like this.