You’d think this a strange question to ask. But, to this day, there are people who believe it’s all a bit of a mystery. It’s not. You initiate a turn on a motorcycle by countersteering, or ‘push steering’ on the inside bar.
To turn right, you push the right handlebar away from you. To turn left, push the left. The motorcycle then drops into the turn with an effect proportional to how hard and long you push. Once you’ve turned, stop pushing.
Your overall direction is dictated by your front tyre (unless the back is sliding). It will be turned fractionally ‘in’, steering you around the corner. Adjusting your line in a corner doesn’t aid stability but can be achieved by further countersteering to tighten your line or pulling the inside bar to lift the bike up and go wider. How you use your bodyweight is also important.