There are a few key things to keep in mind when designing user interfaces that will help ensure your designs are user-friendly and effective.
First, consider the user's needs. What are they trying to accomplish by using your product or service? Make sure your design is focused on helping them achieve their goals.
Second, keep things simple and intuitive. Avoid overwhelming users with too much information or too many options. Stick to the essentials and make sure the interface is easy to navigate.
Third, test your design with real users. This is the best way to get feedback on how user-friendly and effective your design actually is. Use user testing to make iterations and improve your design before launching it to the public.
By following these guidelines, you can help ensure that your designs are user-friendly and effective.