If you have previously uploaded a level to LBP1 you will most likely unlock this as soon as you load the game upIf however you have not previously played LBP1 you need to upload any level you have created (See
Community Spirit in LittleBigPlanet 2 for details) Once you have uploaded your level you need to wait 7 real time days since they are counted on the game's server instead of your consoles clock.