Here’s a great thing about learning the craft of writing: It’s completely OK to charge ahead, even when you don’t know what you’re doing.
This makes it very different from engineering, or from fixing houses or cars, to use examples from my experience. In those endeavors, when you don’t know what you’re doing, your supplies get ruined. You hurt your hands. You end up with something useless, or even dangerous.
But in writing, you’ve lost some time and some paper, and you’ve gained perspective and experience that really help when you get around to studying and learning from people who know more than you do.