Know the dress code of the interview. It is important to present yourself in the most professional manner for the setting of the organization.
First Round Interviews- Business Professional
Meet the Chapter- Business casual
Second Round Interviews- Business Professional
Answer questions in the CAR Format
Context, action, resolution
Here's a great article from Hudson that explains this format further
Do your research! Understanding the role, the goals of the organization as well as what the organization does will show that you are interested and passionate about the organization.
Ask questions! Questions show you care, are inquisitive, and have a drive to learn.
Take a moment before answering questions. While your first thought may be your best thought, take a moment to think through your words and how you want to say them so you are clear, concise and meaningful.
Do not be afraid to show your personality! Get excited and passionate, but know where to draw the line between professional and fun.
The interviewers are people too who have gone through the same process as you did. Do not be nervous, and showcase all the potential you have!