Hello there Marcos! and welcome to dream views!
1.) it is possible, but you must realize you're dreaming first. In order to do that you must overtake fear and think.
2.) you should use stabilizers to keep lucid. like rubbing hands, spinning, shouting out phrases like "increase lucidity", etc.
3.) it was a WILD- I created the dream scene, summoned cans of sierra mist into my hands from thin air, stabilized my dream, and I also made fireworks launch in the background. How about you?
enjoy your stay! if you have any more questions or concerns feel free to ask! good luck!