Some advice from experienced drivers please

It takes time to get familiar with the size of vehicle and learn where and how to position it. Also i feel like you are rushing it either by pressure / frustration or by people watching.

You first need to relax and take your time. This is the only way to successfully drive these machines. Dont be frustrated or rushed as this is when you will make mistakes. Remember to get out and have a look and ask another driver to help if unsure.

When your at a delivery and parked up look how the other drivers are positioning their vehicles and how they are reversing/ turning.

The best advise i can give you is before you go inside get out and have a look at where you will go and how you will get out. Its all about forward planning.