[quote name='discreet' timestamp='1458551834' post='3008406']
That way lies madness. I don't think you should be smiling if you're not feeling it. I left a really well-paid job in a function band because all the false smiling and 'everybody clap' -type stuff really got to me in the end. I'm happy to leave all that to the frontsperson (or people). That's their job. I find deliberate smiling and dancing about just detracts from my playing - which is more important..?
[/quote]
Ignore this.
Definitely do it in front of a mirror. Video it and put it on YouTube so we can all help you pick the right expression.
We all, sincerely, promise we want to help you. We won't laugh.