One is that the shaky cross is the opposite of a flight director (i.e you pilot it rather than follow it). Bar to the left = stick to the left to get it back in the inner circle and bar going up, stick upwards to get back in the circle
If you've been doing the opposite to that with flight directors you have done very well to achieve 500 hours in order to apply to BA! No doubt you were confused when you wrote that. To confirm, it is the opposite of a flight director i.e. bar left = stick right and so on. No other way is assessed in the BA assessments.