how can i make it easy to pass through the Australia - student visa interview ?

Hi, Australian Visa Interview in general focusesses on a few important areas. The questions in general are about You, your education, your finances, the University you have choosen in Australia, the course you have taken in the University, etc. 

So to prepare for the interview, all you need is do lots of webbrowsing about the University, courses, learn about Australia, understand your financial condition, etc. 

Typical questions are 

Why are you interested to pursue higher studies in our country ( Australia) 

Why did u choose this university?

What are the other universities you applied for?

Why don’t you pursue this particular course in your country?

How do you fund for your education?

What is the annual income of your family?

Do you have sufficient funds while you stay in Australia to complete the course?

Where do you plan to stay in Australia?, etc. 

This is not a FAQ and in general, the questions will be based on your answers. 

All the best for your interview.