A short reply that I think will address a lot of the complications being discussed.
I did actually refer to the bag of tricks writers use to direct the eye AWAY FROM LEFT TO RIGHT.
Let's simply acknowledge that left-to-right is natural, and that there are a lot of things to do that would undercut that.
For instance, Brian Bendis is brilliant at creating chains of balloons that will draw our eye in any direction he chooses...but that's him working AGAINST our inclination to read from left to right.
So, by concerning yourself with these tools that will move our eye in different directions BEFORE fully grasping how to write the SIMPLE (yeah, simple) left to right order, you're trying to swim in the deep end of the pool with lead weights tied to your ankles...and haven't a chance of surviving.
There are reasons, which I've explained, why we need to discuss this stuff one tool at a time...and that's because you have to learn to crawl before blasting off in a spaceship.
We covered how panels read. Check.
Now we're writing them, without camera direction, from left to right.
If you concern yourself, at this stage, with how an artist can draw an eye down, instead of from left to right, you're sunk.
BTW, we're going to be staying on this thread for at least the next two weeks, while the columns covers some other topics.
I knew one week wasn't going to be enough for readers to grasp this, and moving onto the next aspects of how panels and balloons work would just compound the confusion.
So, settle in, relax...and write a panel from left to right.