The best way to ace an interview is to prepare ahead of time. Request a mock interview with a professional in your field to get feedback on your performance from a friendly face.
Some employers will also conduct a specific type of interview to assess your skills, problem-solving ability, and how you think.
Offer of Employment
The organization has offered you a job. Hurray! Do you accept? Decline? Learn more about what is in an offer, what questions to ask, and how to accept or decline the offer.