Whenever possible, you should speak about your achievements from the perspective of an employer (helping them to find new customers, helping them to improve their reputation, building good atmosphere on the workplace, earning more money, etc), rather than achievements from your own perspective (getting promoted, earning a degree or certification, etc).
Example: “In five years, I’d like to be an industry expert in my field, able to train and mentor students and entry-level designers alike. I would also like to gain specialized experience in user experience to be a well-rounded contributor working with design and marketing teams on large-scale projects that make a difference both in the company and the global community.”
Start by explaining what you'd need to do to get ramped up. What information would you need? What parts of the company would you need to familiarize yourself with? What other employees would you want to sit down with? Next, choose a couple of areas where you think you can make meaningful contributions right away. (e.g., “I think a great starter project would be diving into your email marketing campaigns and setting up a tracking system for them.”) Sure, if you get the job, you (or your new employer) might decide there’s a better starting place, but having an answer prepared will show the interviewer where you can add immediate impact—and that you’re excited to get started.
Here are the 50 most frequently-asked questions that are posed in interviews. Be prepared to go into some detail about your work history; you may also be asked behavioral or situational questions which require you to provide an anecdote about how you have handled a work challenge in the past or, alternatively, how you would approach a situation in the future.