Squonk wrote
What helps my nerves and seems to calm me down is to engage with the audience.
Explain the origin of the song, tell them what you are doing e.g. We are now doing a waltz in the alternate tuning of DADGAD.....
Ja. You do that well. It helps to engage with the audience a little, gets them on your side (unless, of course, you're at the annual DeathStock and you start telling THEM about waltzes in DADGAD, that might not go down so well).
I talk lots of bollocks between songs. It seems to go down OK. I am not yet in the same league as British folk singer John Tams. I once saw him do an hour set that consisted of about 4 actual songs and a rather greater number of long shaggy dog stories.
I do find it helps to relax me as well. Partly because it gives me time to find the capo, change tuning etc.
One thing you can do if you're not playing solo is every time YOU make a mistake you give somebody else on stage a vuil look. However Conrad is married to the other person he is going to be on stage with so this might not be a good tactic in this particular case.
Experience - I am sure the more you play, the less nervous you will get.
There's a mundane aspect to this. The first time I played to an audience was a total mess. Not because I hadn't practiced the songs I was going to play, but because of silly things like "oops! where did I put that capo?" I think you can learn to have things at hand and in the same place (easily accessible) every time and that takes away things that can get you flustered. I usually use two capos and I like to play sitting down, so one of the little things I do is to wear a shirt with a pocket - the pocket being a good place for the capos. Taking care of little details like this reduces the number of things that can go wrong, thus eliminates some sources of nerves, and it also breeds an attitude of taking care of small but important details.
I agree with Squonk btw Conrad. If I could play as well as you I'd be a lot less nervous getting up on stage.