Well, correct me if I'm wrong, but all "good" artists plan things out, just more or less formally. Experience with planning things out a bazillion times eventually gets in your head, it might seem people skip some "basic steps" but don't they just do it unconciously?
So if it's a tutorial video, then that sounds like a really bad idea to me. Edit: Checked the video, and the description says clearly that it's not a tutorial, just a video on how you do what you do.