Walkthroughs77 Polson, P. G., Lewis, C., Rieman, J., & Wharton, C. (1992). Cognitive walkthroughs: a method for theory-based evaluation of user interfaces. International Journal of Man-Machine Studies. are methods where an expert (that would be you, novice designer), defines tasks, but rather than testing those tasks with real people, you walk through each step of the task and verify that a user would know to do the step, know how to do the step, would successfully do the step, and would understand the feedback the design provided. If you go through every step and check these four things, you’ll find all kinds of problems with a design.
This step is key to designing a good workflow. In my prior work as a product designer. It helped me realize one of the biggest flaws in my design process, which is that I jump into prototyping or working on some form of visual elements before I thoroughly think through the workflow itself. This often results in big gaps in the workflow due to the design being based off of my experience and understanding.
For example, one of the workflows I've designed was a feature to help users with cognitive disabilities to identify a position of interest (e.g. cashier), but one of the input source I used to determine the result was industry of interest, which doesn't make much sense of it now that I look back, since you can't expect most job seekers with cognitive disabilities to know whether they like to work in retail or hospitality, etc.