Lucy was delightful and the only person I’ve ever known who played the harp. She was also something of a perfectionist.
Lucy went through an entire Masters program getting an incomplete in every course. She simply wouldn’t submit a paper that wasn’t perfect until she absolutely had to. So every semester she refined papers right up to the last possible moment. Don’t be like Lucy that way.
No one will be impressed with the book or blog post that you haven’t published. And you won’t get productive feedback from readers either.
So, go for excellence, not perfection. Publish and learn and keep getting better.