Getting an interview invitation can be your first ticket to land your dream job, but only if you can seize the opportunities in front of you. If you want to win the interviewer’s heart and get the employment offer, you should ace in interview. However, it is not an easy job to do, as you only have limited time to show yourself off.

According to recent CareerBuilder survey, nearly half employers (49 percent) can tell whether a candidate is a good or bad fit for a position within the first five minutes of an interview. Only a slight 8 percent say that they make up their mind within a half hour or longer.

No wonder, making a great first impression is crucial during an interview, said Rosemary Haefner, chief human resources officer at CareerBuilder. Besides having knowledge of target company and its product, she said that candidates should prepare and practice everything from making the right body language to answering standard interview questions. Therefore, being well-prepared is the key to successful interview.

Unexpected things can happen when candidates fail to prepare themselves. The survey asks 1,014 hiring managers and human resource professionals to share the most unusual things job candidates have done during the interview process, and the following are among the answers:

• Candidate did not have the skills to do the job and stated, “Fake it until you make it” as his personal philosophy.
• Candidate asked for a cocktail.
• Candidate asked to taste the interviewer’s coffee.
• Candidate came to interview wearing slippers.
• Candidate wore a Darth Vader outfit to the interview.
• Candidate offered interviewer pumpkins and said they transfer good energy.
• Candidate broke out in song in the middle of the interview.

See: 7 in 10 Finance Leaders in Singapore Failed to Hire the Best-fit Talents

Besides revealing the most unusual things candidates do in an interview, the survey also highlights 10 mistakes that will destroy your chances of getting employed. Even if you think that you are the best candidate for the job, making avoidable mistakes can instantly burn your employment opportunities. Here are 10 instant deal breakers according to employers you should avoid:

1. Candidate is caught lying about something (71 percent)
2. Candidate answers a cell phone or texts during the interview (67 percent)
3. Candidate appears arrogant or entitled (59 percent)
4. Candidate appears to have a lack of accountability (52 percent)
5. Candidate swears (51 percent)
6. Candidate dresses inappropriately (50 percent)
7. Candidate talks negatively about current or previous employers (48 percent)
8. Candidate knows nothing about the job or company (45 percent)
9. Candidate has unprofessional body language (43 percent)
10. Candidate knows nothing about the industry or competitors (35 percent)

Body language says it all. There are times when the way you behave can tell it more about yourself than what you say or the tone of your voice. When asked to identify the biggest body language mistakes job seekers make during an interview, hiring managers named the following:

1. Failure to make eye contact (68 percent)
2. Failure to smile (38 percent)
3. Playing with something on the table (36 percent)
4. Fidgeting too much in his/her seat (32 percent)
5. Bad posture (31 percent)
6. Crossing their arms over their chest (31 percent)
7. Playing with hair or touching one’s face (26 percent)
8. Handshake that is too weak (22 percent)
9. Using too many hand gestures (13 percent)
10. Handshake is too strong (8 percent)

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