After you test your prototype with users who have hearing impairments, you need to analyze and iterate on your design. This means you should consider how to interpret and synthesize the data and feedback, as well as how to identify and prioritize the issues and opportunities. You may use descriptive or inferential statistics, thematic or content analysis, spreadsheets, charts, or graphs to organize and visualize the data, or affinity diagrams, personas, or journey maps to identify and summarize the feedback. Additionally, you can use frameworks or criteria to evaluate your design, heuristics, guidelines or standards to assess your design, brainstorming, sketching or prototyping to explore and refine your design. Finally, you can use reports, slides, videos to showcase your results and suggestions and involve stakeholders or experts to review and approve your design through feedback sessions, workshops or pilots. Testing prototypes with users who have hearing impairments can be a rewarding and enriching experience for both you and your users. By following these effective ways, you can make your design more accessible and inclusive, thus creating a better product for everyone.