Don't chase features, make the quizzes you actually want to make. Getting a feature is satisfying, but you'll lose your mind and won't be making the quizzes you want to be making if you simply chase features.
You'll need to make an exceptionally good quiz that impresses QM enough.
That said, try not to "expect" a feature as you make your quizzes. Lower your expectations first, then work to increase the quality of your quizzes. Features don't (usually) come overnight, but keep going and eventually you'll get there.
I have 73 quizzes and 9 of them are featured(in other language tho, its easier geting feature there). My best quiz has 33 noms, and I don't really care about features rn. Just keep creating and it will eventually come. Good luck!
That said, try not to "expect" a feature as you make your quizzes. Lower your expectations first, then work to increase the quality of your quizzes. Features don't (usually) come overnight, but keep going and eventually you'll get there.