Lucid Dream [a few questions]

[Fiddle]

Are lucid dreams limited to how you imagine things, subconsciously even, and what you know? (things that will happen in the dream can only come from your imagination) And how much detail can you remember from your dreams? To what extent do your dreams follow your subconscious and conscious self (what I mean, despite how strangely I worded it, is how much does your subconscious sense of what makes sense or not affect your dreams in comparison to your conscious self. E.X. subconscious would be something like the law of gravity, since it makes sense to you, it'll automatically appear in the dream without you wishing it, and conscious being something you have to bring forth yourself, and to what extent can the subconscious element be erased, if possible) P.S. wasn't really sure how to phrase the title, and I didn't want to put the entire question up there... Edit: Oh and if it IS limited to what you've experienced/know, then what would be a nice combination of feelings to put together? (ie. the feeling of wind, falling and perhaps a roller coaster would do well to substitute for flying) Though I have yet to start delving into LD, I do think that the more you can imagine for yourself, the better the experience.