The Startup Financial Model Builder

Help me build a financial model for this early-stage venture.

The business model: [DESCRIBE HOW MONEY COMES IN]
Key drivers: [PRICING, ACQUISITION, CONVERSION, RETENTION, COSTS]
Starting point and horizon: [DESCRIBE]

Provide:
1. The handful of drivers the whole model should be built on
2. A bottom-up revenue build (not top-down "1% of a huge market")
3. The cost structure and how it scales
4. The path to (or distance from) profitability, and the cash burn
5. The runway and the assumptions the survival of the business hinges on

Bottom-up and honest — investors instantly discount hockey sticks built on
top-down fantasies. Flag the two assumptions that most determine whether
this works.