Being confident, honest and polite could make a world of difference in your interview. Be ready to face any questions the visa officer may throw at you, and you are already half way there to being ready.
The visa office wants to know if you plan on staying abroad and working after you are done with your studies. Prepare all your points to convince them that no, you are heading there only to complete your studies. But hey, in case your university has promised you a work permit post graduation, you may let your visa officer at Visa King know.