Be yourself
Many guys make the mistake of starting to show themselves not as they really are to impress the girl. However, remain what you are, then it will make you fall in love with yourself.
Make jokes
In your relationship, there should be joy and a good mood, this will allow you to attract her faster and easier. The main thing for this is to learn to joke correctly and to give a smile to yourself and the girl.
Find common interests
It is also very important for you to find at least some common interests or even hobbies. It will be easier for you to communicate with each other, which will give you more chances to build a serious relationship.
The second post here really did give the best advice. Being yourself is probably the most important advice. If you put on a show, then she may fall in love with somebody who you are not. It'd then be a very difficult situation. You'd have 2 options: keep living the lie, so she'll be happy and not surprised that you're someone else or tell her the truth and see if she still loves you. If the girl is not interested in you, then it's just not meant to be. You can work to improve yourself, your talents and skills, so that you will be more attractive to future potential mates.