If it's your chosen career go for it! Your enthusiasm will shine through! I'm not a perfect 10 but came well presented and super prepared and got through. A year on I'm really enjoying it and couldn't imagine doing anything else.
One thing I would say is read through all of the FAQ and interview tips so you are well prepared. I would have found it harder to come up with answers to situational questions that they ask (such as..give me a time when you've been resilient) if I hadn't prepared before the interview.
Personally I think personality is everything, especially in this career.
Good luck and be confident!
