Doing stand up comedy is all about making mistakes.
If you're not making them, you're not doing it correctly.
My requests for talents I work with are simple.
One of those requests is, don't try to be perfect, especially when you're just learning, which of course is the state of all of us. If you're new to stand up congratulations, this is about the only time you are allowed to fail, use it wisely.
It was once said that in order to succeed you have to make better mistakes. And that is providing you learn from them.