Your final draft may be the final version of your course. Or, you may test it out, get feedback, and decide to make changes. Both outcomes are fine. Getting to that first last draft is the big hurdle, once you manage that, the rest falls into place.
As soon as you have one full course out of the way, with that “done, handed in” feeling, the next ones get quicker and quicker, easier and easier, as it becomes not about “writing”, but about adding to your collection of courses.
Your course creating skills will automatically, painlessly improve the more you do. Your natural writing style will assert itself. Your thinking about how to organize and present material effectively will evolve. You’ll notice and be able to quickly incorporate ideas from other courses and how-to articles.
At some point, you might want to go back and revise some earlier courses. That’s all great.
All you need to do is let your chipmunk nature take over: “Gimme more courses!”
That’s when you’re in production mode! Getting there is easy, just go step by step.