In the Business Model Canvas the Value Proposition block is of fundamental importance: the value proposition is what brings your company together with the right customer segments.
This is the image that marries supply and demand.
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Circle: i.e. the block dedicated to customer segments. By analyzing activities, difficulties, advantages/desires you will be able to create a realistic customer profile and create a truly interesting value proposition for him.
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Square: that is, the block dedicated to the products and services you want to offer. Here you will have to create a list of products/services that you intend to offer, focusing on how they could solve the customer’s difficulties and generate benefits for him.