Hi there and welcome to SAAFE.
The first thing to do is to get your own personal website. You can do one of the free ones but you must add your own domain at the end to qualify for being added to many sites. For advertising this really is your best first move.
If you already have a website then just get listed on as many directories as you can that cover your area.
You can also google well established girls in your area and see where they are listed, that will help. If they show their telephone numbers then google their telephone numbers as well as that can bring up other sites or directories.