Firstly,learn the song until you know it,then secondly play it until you can't forget it. Muscle memory is a great tool,we all have it,so use it.
Thirdly,be chilled about messing up/forgetting words etc,absolutely everyone does this and it's how you recover that marks you out. Jazz notes,etc are all part of the live experience,the really professional clanger-droppers have the audience believe they never make mistakes.
![Cool 8)](http://songwriterforum.co.uk/Smileys/default/cool.gif)
Don't go all serious or throw a moody tantrum,folk will not be sympathetic if you appear to be a moody tantrum thrower. Laugh at yourself and make light of the ballsup,keep them all on your side,or even better,if you have others playing with you,look over at them and shake your head/rolleyes. I've been successfully blaming bass players and keyboard players for my mistakes for years.
![Smiley :)](http://songwriterforum.co.uk/Smileys/default/smiley.gif)
If you can do without the dummy tit of a music stand,in the long run it'll give you more confidence. If you must have one,stick it on the monitor or somewhere you can see,but the folk listening can't.