In order for one to be able to have an image title, they need to either achieve 1000 posts or become a Premium Member. Considering that you're already a Premium Member, then yes, you are. As a matter a fact, you don't even get affected by the post requirements for profile changes as such. Make your request here and make sure to be specific with your request. (If you want it to be centered, then say so). For further information, please check this thread!