The new Twitter profile lets you show who you are. You can customize your header and background to portray your identity on Twitter. This new profile of Twitter will be rolled out for all users on 12 Dec. So Twitter has something to give on this unique date 12-12-12. Though many users have already got the new version of the Twitter profile, it is yet to be open for all. And finally Twitter will be rolling out these redesigned profiles on 12-Dec.
Your profile pic is displayed at center just below the top inside the header image. So it leaves you with your skill and creativity to make your profile look better. I came across an article that guides you very well to design a twitter header. Here is the link : DesignHack
I had used it to create a header for my profile, you can see here:
