Seek feedback on your writing.
You know what you want to write about, but you aren’t the best writer out there—your work isn’t perfect. Stronger writers can offer you a unique perspective on your work, since, unlike you, they aren’t attached to the fruits of your labor and are more inclined to pick it apart for mistakes. That’s what you’re looking for. You’ve gotten some great feedback in the past, so surround yourself with honest advisers that will supply more of the same for you.