Most of you look for different kinds of positions, and thus are on a different hiring cycle. Know what your skills are and know how to communicate them. You must be able to tell prospective employers and others you meet what you can do and do well. Don't assume that a great resume provides all the necessary information. You should be able to discuss how your skills relate to the fields that are of interest to you.
Preparation is key to interviewing well.
If you've had several first interviews and no follow-ups, it may not be that you're a bad interviewee, but rather that you're looking for a position which is not a good fit for you. Know which skills you'd like to develop. Everyone in today's workforce should develop a portfolio of skills. Employers are interested in candidates who want to grow and develop professionally. The more versatile you are, the more employable you become.