@Bethany13 , o wow, you are every host's dream! You will do great 🙂 Your profile section is lovely, most new guests say nothing there, and there are a lot of new guests who have no reviews yet, so you are perfectly fine!
In case you don't know it yet, there are two kinds of booking systems going right now through Airbnb: 1. the "instant booking" , characterized by a lightening rod on the listing: that one instantly grants you the dates you are requesting. still, it would be nice if you'd introduce yourself briefly to the host with a purpose of the trip statement. As much as you think you need to introduce yourself to the host, really, the host should make YOU comfortable by messaging YOU with details.
2.) the "old" booking request where you send a request and the host has 24 hours to accept or decline your request. not to worry, everybody will accept you (unless they messed up their calendar and the dates you want are not available). No need either to go overboard herevwith messages before the booking. Usually, guests send a brief statement, 4 to 5 sentnces, no more.
For all bookings : any host is interested in you showing up on time, giving them a fairly accurate ETA when you're able to. You're locked in for those dates, making changes creates headaches. perhaps to remain somewhat flexible, you might not want to plan too far into the future, just book for the upcoming week or so. there will always be great places available.
You know that when you book, Airbnb collects the full amount from you which in addition to the listed price you see will include a service fee, cleaning fees a host might hve stipulated, and sometimes taxes, so the final amount is considerably higher. Still, Airbnb lodgings provide excellent value, just carefully study each listing - then trust your gut!
and finally: which countries will. you visit? (My home country is Germany..) have a great, safe trip!