@Aesha0
Thanks for all the great advice! Every point is well worth taking on board and what a lovely sunny attitude you have.
I also agree with some of the others that I learnt a great deal since that first guest walked into my home. He got the room for a stupidly low price due to me not understanding the failings of Smart Pricing (it told me one price when I signed up and then halved it that night whilst I was sleeping!). Still, I felt like I had to honour the booking and do my best, partly because that's my style and partly because I needed that all important first review.
Guest number 1 was very nice and left me 5 stars overall but marked me down on accuracy and cleanliness, so I made a real effort to work on those areas. I think it worked, as I have 93% 5 stars for that room, 4.9 each for accuracy and cleanliness, and it's booked until July next year, which is as far ahead as I allow reservations. So, I would therefore like to add that you can learn a little something from every guest, even the ones that give you host fatigue.
Actually, when guest number 1 arrived, my cleaner had been off sick for a couple of weeks and I made the mistake of mentioning it to him. I have realised since then that I usually get higher cleanliness ratings when I clean the house myself, so he probably would not have rated me lower if I hadn't put it into his head. So, I also learnt not to downplay what I'm offering in that typically British apologetic sort of way! Don't oversell, but also you don't have to mention every single flaw in your welcome tour. Guests often respond, "Oh, I hadn't even noticed..."
Experience has taken away most of the butterflies, but I still get a bit nervous when new guests arrive.