Arrive Late, or just on time Not dress up Not smile or make eye contact Not know the details of your resume Not have done any research on the company Not ask them when they are making a decision Not asking them any questions...
To get to the interview stage, they already believe you could do the job!
The interview is your opportunity to sell yourself and your skills. Employers decide on an appropriate employee on a range of areas. These areas include:
Skills, knowledge and abilities; Personality and whether you will “fit” into the team and with the culture of the organisation; Presentation; Attitude; Availability; References
You need to sell the whole package rather than just having the skills to do the job.