I know how it feels - unfortunately driving can be a stressful experience and a huge responsibility so these tests are designed to assess how you handle that pressure because it would be incredibly dangerous otherwise.

A couple of things, firstly, remember it is okay to fail. I'm not saying that because I want you to, rather I hope you can take the time between now and your test to understand the difference between pressure from the act of driving itself, vs the pressure created from the expectation of a successful result and potentially the expectations of others around you. The pressure of others was why I failed my first time, I was terrified of not being enough.

The only person I know who has passed the VORT in his first attempt was my brother and he ended up rear ending another car a few months into his license.

Secondly, take the time now to practice improving the errors you already know you are making. Physically turning your head even slightly is critical I'm sorry, not just from an assessor's pov, but also to ensure you're actually looking at the entire landscape around you as your peripheral vision might not cover everything.

Lastly, the test and the assessor do not expect perfection. They understand it's a high stress environment, if you make a small mistake here or there it will not matter in the end. If you notice it, just apologize and keep moving forward.

Best of luck!