Hey man I think there are no more signature campaigns that accepts newbies nowadays. On my 5 months in this forum, I have only seen one signature campaigns that recruits Newbie ranking users, and that is the WhyFuture signature campaign, sadly I think they are no longer accepting applicants or the campaign has ended. Just focus on ranking up your account first, then you can start searching for signature campaigns when you become Jr. Member. Because there are some signature campaigns which already accepts jr. member applicants.