Avoid the temptation to simply give a lecture or webinar (unless that’s the format). This is a TOUR, which should be more experiential by nature. And virtual tours need to be much tighter than in-person.
Make sure your tour has a concise theme and a solid finish*.
I highly recommend scripting your Virtual Tour (at least somewhat) in order to keep this structure. You don’t have to memorize it, but it will keep you on time, on topic, and result in a well-thought-out experience. Remember, a guide going on a tangent can be endearing in real life, but when you don’t have the ability to read the body language of guests through a computer screen, it’s an easy way to lose your audience virtually.
Extremely important is to consider how you want to structure in questions. Will you be monitoring the chat, or having people unmute as they wish so that you can take them as they come? Or will you have designated points in the tour for people to ask their questions?
There’s no right answer but know exactly how you want it to go so that you can communicate that to your guests.
*Read more about the importance of a strong beginning & ending with the Peak-End Rule.