My newest Glimmerverse story, The Markless Mare, is finished. It is about an adult Twilight Sparkle who has yet to earn her cutie mark. Given that Shining Armor is part of the royal guard, he asks Princess Celestia to simply give his sister a mark but when that fails, the princess sends Twilight down to Ponyville so that Starlight and her friends can help her discover her special talent.