write simple details about the product story or service and the idea, how you started and where you reached.
write the problem you are trying to solve and a simple explanation on their dimensions and how did you validate that it is real problem.
How does the product /service resolve the problem ,How this solution fix the problem.
Explain the Business model, it is requirement to use illustrative graphs.
Write about The Market Analysis including Market size and how to deliver the product to the market.
Write about next step requirement such as: financial support ,logistics or other. And explain why you think it is important for next phase.