As stereotypical as this may sound, it holds that “You always learn from your mistakes”. Learning a new language means seeing the world from a new perspective, and while you venture into the world of French poetry, theatre, and cuisine, you are bound to make errors while you adjust to your Parisian mode de vie.
Firstly, the person you are trying to converse with will always help you progress. So make errors, as silly as they may sound, you’re better off trying than shying away! Secondly, a great way to familiarize yourself with new vocabulary and phrases is to log them in a book. Maintaining notes will help you expand your understanding of French, and when in doubt, you will always have something to return to!