Getting your dream job isn't an easy thing to do. It depends on many aspects. You might not even realize the importance of some of them.
Your communication skills should be excellent. Have a positive attitude. Show that having a dialogue is very easy for you and don't be afraid of anything. Don't show any sign of emotions, of fear of failing or such. The attitude is very important in an interview. It is probably the first thing that brings you to limelight. Usually, the employers are looking for confident people who can manage any situation with great success. People with weak characters will lose in most cases.
When going for an interview, know very well what you want and have confidence in yourself. Go there with your personal conviction that you are the best person for the job. It will give you an extra boost of confidence. As I told you, the employers are looking for such people.
Incorporate these things in your routine for an interview and you will be more confident in what say and do in the interview.
When the person taking your interview starts asking you questions, don't babble. That comes from being nervous and from the rush of adrenaline. Learn how to control your emotions. Avoiding babbling. This can be achieved by practicing questions and answers. at home. Yes, it sounds silly, I know, but is a good way to tackle this issue. Don't give long answers. Be concise and to the point. Always try to focus on your good sides in everything. Don't be negative, because you will surely fail.
Now, almost as important as the body language is the dressing for an interview. I am sure you know that you are forbidden to dress with outfits worth going to a club. You will need a business outfit. The best to do is wear a shirt and pants or skirt. Your clothes have to be clean and very well ironed. The way you look matters a lot for the employers. Show them that you have a professional attitude and that you respect the employers as well as the job you want. By doing this you show self respect too.
During the interview, it is very important to make eye contact. Again, this is related to self confidence and trust. If you are shy, then you surely must control this issue and be open. Employers don't like people who refrain. Be polite and calm and pay attention to everything the employers ask you to do.
If you follow these basic instructions, you have a shot at getting the job. Of course, you have to be well prepared for the job. If you state in your CV that you are good in a specific domain and you aren't and your employers find out about this, you will fail the interview and, naturally, don't get the job. Be honest about what you wrote in the CV and be honest in the interview, too.