Thread: What to visualise?

Hey,
I'm new to lucid dreaming and am in search of a method that works for me.
I read from several somewheres' that it's good to visualize what you want to dream about. As in you visualize the scene vividly, 'feel' yourself becoming lucid and experiancing said dream.
I would really like to try this out, but was wondering if there are better or worse things to visualize?
As in, to get a scene where you become lucid, should you visualize something crazy, to prompt yourself lucid, like a herd of elephants the size of mice being eaten by giant fish?
Or should you go for the calm scene, don't bother visualizing people, something easier for a beginner like myself. But all I've read about dreams needing plotlines or they are unstable suggest that it would be harder to stay lucid in one of these areas.
Which would be more affective?
Thanks, any other hints for a lucid beginner would be greatly appreciated

Oh, also...I've been trying to visualize the carpark of my school, because the only recent lucid dream I had was there. Is this a good idea? Or bad because I am often there and might just go 'okay, school...that's normal' and not be prompted to reality check?