Second or follow-up
interviews
Panel interviews, second interviews or follow-up interviews can very often be a deal breaker. People tend to be more relaxed during the second interview. This is generally good. You should be aware of being over-confident during these interviews as it may come across as arrogance.
You should also be aware of giving too little information. People tend to give less information about themselves during the second, third or panel interview, as they have met one or two of the interviewers on previous occasions. Never assume that one particular person discussed your background and details in-depth with the others.
When people fail the second or third interview, the feedback is often that it was because the person did not display enough energy or solid experience. Always treat the second, third or panel interview like your fist interview.