At the beginning,
You should explain the concept of a pay-as-you-go tour where customers pay at the end what they consider appropriate, or the amount they can afford. Most of the people are aware of this, but it's better to reemphasize. If they have any doubts, make it clear that nobody else is paying you for that, but that it is your formal job, and you earn a living thanks to the payments you receive.
The duration of the tour
should be between two and three hours. Anything longer than that is quite a stretch. At the beginning of your tour, let people know how long it's gonna take. People don't want to be left in the dark, so the more you can tell them upfront about the places you are going to visit, the better. However if have some special surprise moment for them, feel free to not reveal that secret until the end.
Increase your group size.
You may want to be there 15-30 minutes before the start and try to attract other travelers. Wearing a flashy t-shirt with the words “free tour” can grab other people's attention to join the group. To look more professional, you can download our logo here and print it on your T-shirt.
Connect with your audience.
Whenever you share something with your audience, make sure that people can hear and see you. A common mistake that beginners make is to look at object of interest themselves while talking. That of course creates a lot of issues, from people not hearing what you say to loosing the connection with your audience. You can also have friendly conversations with people while heading to your next point of interest.
Practice a great closing.
A well-crafted and rehearsed ending of your tour can be the key for a big final applause and of course, better tips. Recap on the most remarkable points of your tour, make it emotional, and say thanks for sharing their time with you. Say that you're happy to provide additional advice and answers to any questions they may have, but kindly ask them to wait until everyone in the group has made their payment.