That was good Paul and thanks for sharing.
You've got the beginnings of a great stage presence. I can see you are nervous, more so during the first half and practice will help overcome that. It comes as no surprise that even the best comedians repeat their show over and over, just with a new audience.
Just trying to tell a joke to a group of friends is really hard. In comparison you have done an amazing job. You're onto something and have the talent.
I loved the part where the audience was laughing at who knows what and you said you must be better than you thought.