Just sit back, relax and have fun! Being able to keep joking is
always the best in any situation.
You know, if u keep thinking of trying to impress her just becos
it's a date, it's going to stress you out. Therefore the most
important thing you should always keep in mind is to have fun. You
must feel the fun yourself, not only her. That way, both parties
are having fun.
Enjoy your date.