She will check your humbleness by the way you talk to the waiter. If you are even a little bit rude to them, you will not be able to leave a good impression and she will think of you as a snobbish person.
6. Compliment her.
Do not keep on telling her how beautiful she is, but compliment her on little things. In fact, it would be great if you compliment on her bag or her watch because girls love to be praised for their shopping.