This is a very visual effect that you will be able to do with some practice and the props. Since
they are not provided (but you should have them already if you are a worker) so that is why 4 stars.
You will need to practice, but don't you always?
This does require the correct lighting and
setting. That being said, it works at most of the settings that magicians use.
Did have
trouble with one grabby spectator, but it worked out...cannot tell you how without revealing too
much.