What are the next steps as an advanced driver?

If you have a pass why not try for a pass with distinction?
Aim for a F1rst pass

Observers are the people who pass on their advanced driving skill and knowledge to new Associate members (GA’s) to allow them to prepare for the Advanced Driving Test.  All their time is given freely. They are volunteers and not paid for their involvement.
Be an Observer

Take a Master test which requires a demanding drive on unfamiliar roads.
Take the Masters Test