Thanks OscarDeltaBravo :-)
To be honest. I'm really happy to start my training soon.
Is it only the BAA interview with compass you do next week or final interview already ?
What I can advise you, is to be relax, sure of your knowledge and about yourself. The interviewer may be willing to see your reaction under stress. Stay focus and be sure on your position.
Otherwise that's a basic assessment and if you are generally well prepared it should be fine :-)