I agree with Wesman Todd Shaw. Even if you don't use a personal picture, you should have some image that reflects your presence on HubPages. Without an avatar or profile image, people will not take you seriously.
This is a community on HubPages and if you look at the profiles of popular authors you will see that they have some kind of image that shows what their HubPages reflect, or a simple picture of something they love or enjoy.
For any new writer I would suggest visiting the HubPages Learning Center. I have learned so much by reading official HubPages publications on just about every aspect of HubPages. Here is the link: http://hubpages.com/@learningcenter
I know that this answer strayed away from the original question but I felt a desire to share this with any newcomer who reads this question. Good luck to all new Hubbers!