As mentioned before, each stage that is included in the process of developing an interactive product relates to one another. A user scenario is highly dependent on a user persona to be able to reach its full potential. Where a user persona develops a hypothetical user, a user scenario depicts a proposed situation based on the persona and how they would interact with the product in order to reach a given goal.
The fundamental topics that should be addressed include:
WHO – WHAT – WHERE – WHEN – WHY – HOW
This helps the designer follow a visual navigational path and discover what elements are missing and which don’t work. Therefore, it is important to develop a thorough user scenario in order to create a successful interactive product.
Below is a great website which goes through step-by-step how to develop a strong scenario.