I have a quilting confession to make: I am an old fashioned, self taught quilter. When I made my first quilt in 2008, I had never read a quilting book or searched for a YouTube tutorial. I just cut out a window template and went for it. The same is true today. I spend - sometimes an entire day's worth of craft time - measuring and cutting the window templates needed for a quilt. I have made many, many templates.
And that is the whole point of this quilting adventure, right? It should all line up.