This is something I wish someone had walked me through before we started working with an external creative team. Writing a design brief for an in house designer who sits near you is completely different from writing one for a remote creative working asynchronously in a different time zone.
With a local designer you can be loose with the brief because the gaps get filled in conversation. You point at a reference, you sketch something on a whiteboard, you course-correct in real time when the first concept misses. With a remote design team none of that is available. Every ambiguity in the brief becomes a revision cycle. Every assumption that did not get documented becomes a day of delay.
What I have learned after working with outsourced creative talent for two years is that the brief is the entire product specification. It needs to contain the objective, the audience, the format specs, the brand constraints, the reference examples, the tone, and the specific outcome you are optimizing for. That sounds like a lot but a well structured brief template reduces the writing time significantly once you have built the system.
The other thing that changed our remote design workflow dramatically was having our assigned designer help us build the brief template after the first month of working together. They knew exactly what information they needed to produce good work without back and forth and the template reflected that rather than what I thought they needed. For marketers managing remote creative relationships, what does your brief process look like and what single change made the biggest improvement to your first pass approval rate?