This guide was extremely well written, but, frankly, it's awareness that triggers lucidity, not vividness. I've gotten plenty of lucids from blurry and unstable dreams, and DJs haven't been proven to do much more than increase recall (which isn't entirely necessary in and of itself). The key difference I've seen between LDers who have frequent LDs and those who don't is that the former tend to have a higher level of general awareness than the latter.

Sure, having pleasant and vivid dreams is great and all, but it isn't going to get anyone lucid. Unless it's placebo you're shooting for, then I apologize for ruining the effectiveness of your tutorial.