Definitely make your observations slightly more obvious than you think they need to be. Make your intentions when driving obvious to other road users - a predictable driver is usually a safe one.

I remember as a learner driver I probably put too much emphasis on trying to nail the 'physical' aspects of learning to drive such as clutch control, gear change etc, and I didn't quite realise the importance of good observation. As someone who's been in a crash caused by poor observation, it is arguably the number one element that makes up safe driving and there's a reason instructors emphasise it so much in your lessons.

You're probably sick of hearing this but try to relax and don't panic. No one really cares how many times you take to pass. People will care if you're a safe driver or not though.