I recall having had an interview for a particular position that I had been working toward for some time. Unfortunately, I was interviewing with a particular employer that did not know how to vet or interview prospective employees. I remember being asked a series of questions, which I'm sure they thought were a harmless exercise in testing my critical thinking skills, but instead I ended up feeling like I was ambushed with a pop quiz designed for me to fail, because I had the disadvantage of not having ever worked in the very specific capacity/position before. Needless to say, neither I or the interviewer walked away from that meeting feeling confident about one another. It seems as though that interviewer should have reviewed my resume more carefully and realized, "okay, she has done alot of work to get up to this position, but she still lacks the experience. Let me see how teachable she is". If he had approached the interview that way, perhaps the questions and overall vibe of the interview would have been different. Instead I felt like they were asking me questions about how to do a job I had never worked, and I began to wonder if they had any intentions of investing in my professional development through training, or did they expect me to have all the answers and expertise coming in the door?
I say all this to say, alot of times we place the blame on ourselves when we dont get the call back, and we assume we must not have interviewed well. Alternatively, sometimes interviewers do not know how to interview well, and many company's have positions unfilled for MONTHS due to poor interview conducting. Keep your head up!