Job interviews can be nerve-racking.  There is a lot to deal with while preparing for the interview to get a hold of the prospective job you applied for.  Here are  important things to remember as you prepare for an interview: 

1. Arrive early at the destination of your interview; this may be at the office or any other interview premise.
2. Use the official language when calling or texting. Even when the job advert says you should be fluent in a certain language, the official language should be your priority for communication. This is one mistake Interviewees make; they seem comfortable after knowing that the employers are tribe-mates or when the advert requires a certain kind of language.
3. Maintain eye contact; Emotional intelligence is a great tool in any field which requires communication, so eye contact in an interview speaks volumes to the interviewer and the interviewee.
4. Dress appropriately for the culture of the company you are interviewing with; the most cherished dress code for most interviews is office wear; it is preferably that a man puts on a plain coloured suit with dull colours like blue, black, khaki, and other non-shouting colours, a gentle shirt and a tie is a great catalyst to any male, well as a woman, should also preferably put on decent office wear without shouting colours.
5. Be professional with your interactions. You are evaluated from the minute you walk in, not just during the interview. Be courteous to everyone you meet, and stay off your phone, even in the waiting room; you must be alert, respectful and humble.
6. Prepare anecdotes and stories related to the job and your problem-solving ability; your stories should blend up with your skills and accomplishments and be related to the job field you are applying to.
7. Get comfortable talking about your accomplishments.  Sell yourself without bragging; being open and confident while speaking builds confidence and attracts the attention of the employers or the interviewee; no employer would hire someone who doesn’t have any accomplishments in his career life. You should know the content of your resume or Curriculum Vitae well.
8. Resonate well with your resume; be well versed with your resume and be willing to re-share the details of your resume in conjunction with your stories and abilities.
9. Do your homework about the company before an interview.  Demonstrate that you understand the company’s vision and articulate how you can help it achieve its mission. This can be done by practically expressing relevant ideas which could build the company. 
10. If you are being interviewed virtually, consider in advance how best to deal with the noise, light, and internet connection in your environment.  
11. You can take some time to consider your response before answering questions.  If you are unsure how to answer a question, do as politicians do and answer the question you wish you had been asked.  Both strategies can help prevent you from being unsure or flustered.

These but a few ways to prepare for a job interview; they may not have been exhausted. However, they are the immediate preparations that can be considered a day before the interview. You must be well acquainted with those life-long things to be relevant in the Job field; perfection is the limit in any working area.