Mistake #1: Appearing uninterested.
This drives employers crazy. Most employers have more applicants than they need or want. If you aren't demonstrably interested in them, they certainly aren't interested in hiring you.

Mistake #2: Being unprepared. Obvious lack of preparation is an opportunity crusher. And, lack of preparation usually becomes obvious quickly.

Mistake #3: Being angry. Angry people are NOT people employers want to hire. Angry people are not fun to work with.
They may frighten co-workers and/or customers or clients. They may also abuse both people and equipment (computers, cars, etc.). Not good contributors to a happy workplace or a prosperous business, even if they don't "go
postal."

Mistake #4: Sharing Too Much Information
Sometimes, people have a whole-truth-and-nothing-but-the-truth mindset in a job interview, so they "spill their guts" in answer to every question. Not smart or useful!

Mistake #5: Negative body language. If you never smile, have a limp handshake, and don't make eye contact with the people you meet at the employer's location, and especially with the interviewer, you'll come across as too shy or too strange or simply not interested.

MUST WATCH VIDEO:To see more mistakes Applicant make, Watch this video. Very Funny Video. See what made this Applicant To Faint In Job Interview

https://www.youtube.com/watch?v=TpIPZ0LROCI&gl=NG&client=mv-google&hl=en-GB