It's a big imagination when you create levels if that's what your asking
Because you can make your own levels
Not online, yet. I believe they are working on it. However, you can create levels with your friend who is playing with you on the same PS3.
You have to complete all the levels in Da Vinci's Hideout then my moon will appear go there
In one of "The Canyons" levels In littlebigplanet 1
Hard question, but in my opinion, yes. In ModnationRacers you can make better mods and tracks + it's easier to make karts. But in LittleBigPlanet, you can create whole levels instead of tracks.
On DLC's
there a total of 25 story levels
No, you do not. To create a level go to your moon and select any empty slot. You will not be able to upload your level without going online though.
no you need to purchase the new game
From the African levels
yes you can...
NO