MarkS of Media Molecule provides helpful tips for getting your LittleBigPlanet level more attention. From the obvious (title suggestions) to the very helpful (how to get pictures published with your level and how to best create a badge).
The guys at Media Molecule break down the process into 6 Steps:
1. The Title
2. The Badge
3. The Description
4. The Location
5. Uploading Pictures
Check out all of the details and helpful tips from the game's developers.