I wouldn't worry too much about having no reviews @Kirsten24 ...... everyone's got to start somewhere. I'm sure there are many hosts, like ourselves that accept a large percentage of guests without reviews.
I would like to think that being an Airbnb host with 300 reviews would be a great advantage for you to be accepted. They will see on your profile that you have 300 host reviews, by the way.
We began our Airbnb journey as guests travelling around the UK and Europe, and then later, became a host. The very first host that accepted us, without reviews, was in Paris..... the loveliest guy and most amazing host. I specifically looked for Airbnb's that had many, and great reviews. That way you can be sure of someone with a wider understanding and experience of someone without reviews.
As a host and a guest, think it's important to send them a detailed message about yourself to help the host feel comfortable about accepting your booking!
Happy Travels 🙂