Well done, your half way there. The one thing i say to people when going for interviews is to try and show some of yourself. Something for the interviewers to remember you by. Even if its a little joke, i dont mean a knock knock.

My example was by saying that 'i have to admit to watching student midwives on sky and...... enjoying it!! (now linking it into something related) Being able to see more of what is entailed as a student midwifes gave me a better understanding of the role.

I know its a bit odd but when i spoke to one of my lectures she said that is what got me my place. I was not afraid to speak honest and they saw i bit of my personality.

Good luck. Let us know how it goes.