Here’s a secret. Rarely does a pianist play her piece perfectly. Most often, she makes mistakes, but you can’t hear them. Why? Because she integrates them into the piece. I was told, “if you ever make a blunder and the song calls for you to repeat that section, purposely make that same mistake.” The crowd automatically thinks your wrong notes were an accurate portrayal of the piece.
So never falter. Chances are, those errors will sound just fine within the framework of the piece.