When it comes to usability, there are Jacob Nielsen’s Ten Usability Heuristics which every usability person can relate to. These are as follows. Jacob says they are called “heuristics” because they are more in the nature of rules of thumb than specific usability guidelines.
These are Jacob’s ten general principles for usability design.
- Visibility of system status
- Match between system and the real world
- User control and freedom (undo,exit)
- Consistency and standards
- Error prevention
- Recognition rather than recall
- Flexibility and efficiency of use
- Aesthetic and minimalist design
- Help users recognize, diagnose, and recover from errors
- Help and documentation
These will also guide you but you can still be innovative. Again, you need empirical support, not your own cognitive bias!