Hope to get this job.
Want a tip?
I used to use a supporting wheels back then.
But for an adult, i think is best to learn balancing by sitting on your bicycle, roll it so that it move forwards, then lift up you legs...
Repeat this, until you get a hint on how to balance it.
Trust your body, they will adjust to it.
As long as the bicycle is moving forward, you'll learn how to balance.