To update your profile, login and click Your Profile in the Profile & Photos drop-down menu at the top of the screen. Click Edit next to the section you'd like to update and make your changes. Be sure to save at the bottom of each section when you're done.
Try to put your best foot forward with at least one photo and snappy, detailed essays. Your photo is the key because most people feel more comfortable writing to members they can see. Try to stay positive in your essays and let the real you shine.