This is a condensed version of my book Be Interview-wise (published by Management Briefs). lt will help prepare you for traditional interviews and competency-based ones. There is a case study in it that will help you to summarise and structure your experience using a competency matrix- particularly helpful for competency-based interviews. The back page of the PDF is a blank matrix that you will find helpful.
If you are preparing your examples for an application form it is useful to lay it out in bullet points on this form. Keep the SITUATION statement brief and make the TASK statement short and precise. Match your ACTIONs to the competency definitions. Make sure your RESULTS are precise and matched to your task.
STAR Technique in Action