You have to ensure you example where you meet each competency that is mentioned in the job advert. Each example will become stronger if it covers more than one competency. For example: You may say you did something which actually covers every personal quality they look for, such as a team exercise that covers:, leadership, communication, initiative, respect. If you mention a time you worked as part of a team, ensure you focus on what you did within that team. If you were given a hard task to complete, show how it started as a negative experience but turned it in to a positive outcome. Show how you communicate your own ideas aswell as listening to others. Demonstrate your leadership skills and how you support those under you. Did you show how you demonstrate initiative and not wait to be told what to do. Did you mention your passion for learning, the role involves learning so that's well worth a mention. What about the importance of the role of Criminal Investigator and the importance of paying tax, the benefits to society and the repercussions to those most in need If tax isn't paid. Its important to mention why you want to do the job and why the job is so important. Remember to always tell them you are willing to get the job done right first time even if it means working in your own time. Remember you want to work for a diverse and inclusive organisation that shows respect for all regardless of race, religion, gender or social background. Remember to mention how you learn from your mistakes to ensure you develop in the future.Just a few if you didn't include them.