Below is list of usability principle

Pick 5 that you believe are important for the system. Describe how you have or could have planned your user interface using each as a guiding principle. Using the number, be sure to tell me which ones you have chosen.

1. Use terms and images that are familiar to your users (metaphors).

2. Ensure that sequences of actions to achieve a task are simple as possible (minimize effort)

3. Ensure that the user always knows where they are (content awareness), and what he/she can and should do next.

4. Provide good (and timely) feedback.

5. Ensure that user can always get out, go back, or undo an action.

6. Minimize surprise.

7. Ensure that response time is adequate

8. Be consistent.