Also, do some research to see what others in your profession are charging per hour. If your hourly rate is too high, you can potentially lose clients. Leaving questions blank creates concern in prospective clients. Most of the freelance job sites allow you to have very long titles. Take advantage of this fact.
Clients sift thru titles after they do a search.
Without references, your profile might get totally passed by. Hiring a freelancer is risky business. If you have to, use old co-workers or friends from college as a referral. Make sure to place your most impressive examples of your work at the top of the list. When you describe each job you had make sure to explain in detail what the result of your work was.