I'm just not sure this qualifies as a tutorial, mate. That's the problem. A tutorial is something a person who really understands how to break down and communicate a movement creates in order to pass on that knowledge. I think it's great you want to make one, but as was said before, take some time to plan and rehearse the tutorial. Figure out what you struggled with when learning the roll and figure out solutions for your audience. Plan what to say so you sound confident. If you're getting distracted and your voice is cracking and so on, your audience probably won't accept your authority.
Also, make sure what you're teaching is correct! I saw a lot of issues with your roll, not to mention the pain on the last roll, which proves something was wrong. Passing on incorrect knowledge over the internet is not something you can ever fix, to make sure you're helping more than hurting!