There aren't really any rules when it comes to playing guitar. If it sounds good, it is good!:) The arpeggiation pattern I'm teaching in the tutorial is how it was played on the original recording. That doesn't necessarily mean you need to play it exactly that way to enjoy it or make it sound good. I encourage all guitarists to take what they can from every lesson, add the concepts and techniques to your guitar toolkit, but most of all, experiment with all of it and come up with unique parts and new sounds.
Cheers!
Mike
Keep rockin!
Mike Olekshy
GT Guitar Coach