Besides following the ergonomic guidelines, you can also use ergonomic methods to evaluate and improve the design of your standing desk. This includes conducting user research to understand the needs, preferences, and challenges of your target users. You can use surveys, interviews, observations, and usability tests to collect data and feedback. Additionally, ergonomic assessment tools can be used to measure and analyze the ergonomic factors of your standing desk. These tools include posture analysis software, electromyography (EMG), goniometers, force gauges, pressure sensors, and rating scales. Lastly, ergonomic design principles and techniques can be used to create and refine your standing desk prototype. Techniques such as sketching, wireframing, prototyping, and testing can be used to iterate and improve your design based on user research and ergonomic assessment results.