Ha, ha I don't have anything constructive to add except to say relax and enjoy your self.
I would encourage you to watch more Roy Underhill Woodwright episodes . . . his rustic results can make you feel pretty good about the fit and finish of your joints.
In the same breath it is probably best TO AVOID watching Frank Klausz cut mortice and tenon joints . . . could cause you to lean toward an enthusiastic bout of hara-kiri.