I'm with Burns in that I haven't managed a WILD, but there actually are people who have There are some great tutorials on the subject if you want to check those out and you can also PM the authors of those if you feel you need more information. Also, feel free to search around, as there's a lot of information floating around here.

As for the vividness of your dreams, mine tends to come and go as well. I'll have a week of really exciting, enjoyable dreams that I hate waking from, and then I'll go through a week of dull, mundane dreams where I wake up and go "huh?" I'm not sure if there's a way to controll that, but sometimes I think the dull ones make the exciting ones that more enjoyable.

Sweet lucid dreams!

-Amé