how can i enhance the usability of a design?

1. 80/20 rule
2. accessibility
3. aesthetic usability effect
4. affordance
5. confirmation
6. consistency
7. constraint
8. control
9. cost-benefit
10. entry point
11. errors
12. fitts law
13. forgiveness
14. hick's law
15. hierarchy
16. iconic representation
17. immersion
18. interference effects
19. inverted pyramid
20. layering
21. mapping
22. mental model
23. mimicry
24. performance load
25. progressive disclosure
26. readability
27. recognition over recall
28. signal-to-noise ratio
29. visibility
30. wayfinding