Tell the interviewer something about business situations where you actually used this skill and elaborate on the outcome. Don't be afraid to admit mistakes. Employers want to know what mistakes you have made and what is wrong with you. Don't be afraid to admit making mistakes in the past, but continually stress your positive qualities as well, and how you have turned negatives into positive traits. Relate stories or examples that heighten your past experience.
Past performance is the best indicator of future performance.
If you were successful at one company, odds are you can succeed at another. Be ready to sell your own features and benefits in the interview. Know everything about your potential employer before the interview. Customize your answers as much as possible in terms of the needs of the employer. This requires that you complete research before the interview about the company, its customers, and the work you anticipate doing.