Job interviews are a tense time for anyone, this hopefully will help you when it comes to that crucial point in time.

Lets start with the simple task of what to wear, the general dress code.

Males:

• Solid colored shirt, preferably white
• Smart tie
• Dark suit
• No jewelry, just a watch
• Neat, tidy hairstyle, ideally short and well kept
• Neatly trimmed nails
• Carry a briefcase or similar
• Don’t go overboard on aftershave or deodorant!
• Cover any tattoos or body markings

Females:

• Solid colour suit, not too short or clingy
• Blouse to go with the suit
• Smart shoes, ideally flats, or a small heel
• Very little jewelry
• Very little perfume & make-up
• Tan or light hosiery
• Well manicured nails
• Carry a briefcase or similar

(http://jobsearch.about.com/od/interviewsnetworking/a/dressforsuccess.htm)

Speech wise, try to sound confident, if you’re scared try not to show it in your voice, keep a strong solid tone. At the same time don’t go the complete other way, and be incredibly cocky. try and stay modest in both your tone of voice, and the things you say.

Talk properly, don’t use slang, or any terms that may be seen as derogatory to someone. Having good interpersonal skills is a must, if you’re quite an introvert, then try and combat that and seem quite outward, and confident. Don’t forget that your body language says just as much, if not more about you than what you actually say! 

To learn more, watch this TED talk: http://www.youtube.com/watch?v=Ks-_Mh1QhMc