Hi Pam,
Hey, you know what? Anything you do gets better with practice so just keep having fun with it.
I think it sounds like you have a blast singing and playing for people and that part of it is more important than being perfect at it.
That's really nice about your friend. You had to wait a lot of years to hear her perform again...that's wonderful that you could be there and share it with her.
I think it's great. More memories for the two of you to have....
That's very cool that your instrumental was a crowd pleaser
That has to make you feel good!