All you showed is that 3D is capable in Flash, but most people already know this already..
Also, this wasn't much of a tutorial in my opinion. You linked to other tutorials, rather than explaining things yourself. And when it came to the actual rendering, you linked it to an already-made file. myPlane.xml. Which you didn't even show how to write the code in the xml file.
So what did I learn from YOUR tutorial.
Papervision can be used to create 3D in flash. Oh wait. I knew that already...