1. Get to know the job that you are being interviewed for. It's the same as any other kinds of interview, you need to know well about the job and company that you are applying for. Read the job ad to find out the responsibilities and attributes that they are after. Research more information on the company's website. Google them to find any other candidates who have shared their interview experience with this company. You can find lots of questions and answers on forums such as Whirlpool.
2. Use examples from a variety of experience to demonstrate your skills and capabilities. You could combine both work and non-work (personal life or some social events) experience
3. Use examples of quotes from your bosses or customers: For example, "My manager gave me a good performance review, they liked the way I took the initiative to get extra work done".
4. Follow the formula "Situation, Action and Result": Structure your answer into these 3 segments: description of the task, the actions that you took and the final result.
5. Practise telling your stories. Each story should take 1-3 minutes to tell, practise your stories until they are concise and you're fluent at it.