Thatās quite common. a mix of uncertainty, a bit of stress, extrapolation of detailsā¦
I know that feeling and I think it is common when things āget realā.
In reality you actually know your stuff and still doubt tends to make the uncertain factor disproportionate.
Perhaps now is a good time to stop with creating or learning new stuff and focus on the gig.
Try to come to a setlist and practice the songs in this order. Practice it in several different places around the house if you have that option.
Record a session and be realistic; take a healthy selection of things you want to address and improve but donāt expect yourself to be fixing everything
I always tell people the first step to making songs your own is to gain and maintain control.
You could keep a bit of a scorecard for each song to track how you feel the control is for every song. Do you need to simplify some parts in order to feel confident enough that ypou have actualy control in those sections? Or the other way around; are there section that you are absolutely solid in now and you want to improve (after the gig, towards a next gig).
Though, try to put in at least one or two little sport where you do something extra or new IF they donāt give you anxiety. If you are not comfortable with that, you have to make a choice.
It is good practice though to learn how to āfail on stageā.
I will dedicate a section on that in my Live Club as well; Being comfortable with the knowledge that mishaps WILL happen, will make you better prepared to think quick on your feet and to handle the situation. In most cases, dropping back to a simpler thing of what you were doing saves the day and the audience will hardly notice. A hard lead line becomes simplified to some longer notes. A chord gets skipped, a tactical silence with an acapella vocal bridges a fumbled chord sequence. Thatās hwy i urge peopel to learn songs in layers instead of a sequence of notes from beginning to end. When something happens, you can drop a layer of complexity. If you progress inskill and experience, you build complexity upon layersā¦
A hard thing to learn and practice can be NOT stopping when fumbling while being safely at home practicing. Keep the song going (rhythm is king!) ā¦;and if you fumble something, practice how you manage to keep things going.
Knowing youāve got some failsaves in your pockets, will make you feel more comfortable AND you will actually forget less.
Fo the gig:
Go scouting, be early, talk to the people, see some other gigs, know how the stage looks. It will all be easier to project yourself to what it will be like if yo are standing there.
Good luck buddy!