I don't think you need pauses. As you say, the viewer can control the pace of the tutorial by pausing, rewinding etc. I do agree that this could be separated into two separate tutorials, the first explaining the V strip concept, how it works and why it's needed (with a few more examples of scenes with the V strip missing and in place) and a separate tutorial on the technical construction of a V strip.
For the second tutorial, I'm not sure it's necessary to elucidate every single step in detail. I think you can assume that anybody thinking of joining this project has a basic understanding of the fundamentals of Anim8or. Where I think you should concentrate is on explaining the more tricky ideas, such as flipping the object to create vertical symmetry (ie. why this is important) and the way the material works (eg. if it includes transparencies or alphas). Having said that, in a collaborative project it is important that everybody's work meets the project's minimum requirements without the need for someone to make adjustments before it can be used, so there's nothing wrong with defining things like the required scale and angle of the V under different circumstances, etc.
I think your visuals match your verbal explanations very well from an editing point of view, and after watching this tutorial I'm confident that if I had access to the texture used I would be able to submit a scene that met the required protocol with regards to the V strips, so in that sense at least I would consider this warm-up a success