Use the stakeholder cards to give the different stakeholders a place in your model. Place your new concept as a separate start-up in the middle of the model. Put your organization in there as well, but as a customer or supplier. Always place the customers on the right and your partners and suppliers on the left. That way you keep the model clear.
Draw lines between stakeholders and use the value cards to map all value exchanges. Also indicate the exact amount of value and direction of the exchange.
Are there different revenues from multiple types of customers? You can differentiate with different colored lines.
Challenge each stakeholder and transaction. Do they give and receive an equal amount of value? This will ensure that the model is sustainable. Also look for alternative revenue models or revenue streams. This is how you explore how your product or service makes the greatest impact.
Do you have questions you don't know the answer to (yet)? Are you working with a lot of assumptions? Are there any risks that still need to be figured out? That's perfectly normal. Park them on the right side of the model. These are the follow-up actions to validate your concept.