Start with the situation, not a feature list
A useful brief explains what is happening today and what should become easier. Instead of asking for an app with login, chat and payments, describe who will use it and the problem they need to solve. A local shop, for example, might need customers to see available products and request delivery without repeated phone calls. That context helps a development partner suggest an appropriate first release.
Describe one complete user journey
Walk through the most important task from beginning to end. Who starts it? What information do they provide? Who reviews it? What counts as completion? For a booking product, this might mean choosing a service, checking availability, confirming a time and receiving a reminder. Include the staff side too: someone may need to manage cancellations or correct a booking. A short, concrete example often reveals more than a long list of screen names.
Separate requirements from preferences
Mark each item as essential for launch, useful later or still open for discussion. Mention constraints such as an existing database, a particular payment provider or a deadline tied to an event. Share design references, but explain what you like about them: their navigation, visual style or checkout flow. This gives the designer direction without assuming the entire reference product needs to be reproduced.
Make room for practical questions
State a budget range if one is available, the people who will approve decisions and what materials already exist. Useful materials include branding files, sample content, API documentation and access to a current product. Ask for an estimate with assumptions and exclusions, rather than expecting an exact price from an early paragraph. The next step should be a shared understanding of scope, risks and what needs clarification before work begins.
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