Simply answer a few questions, hit "submit" and hope.
Want to get your hands on the latest 'LittleBigPlanet' before it comes out? You may be in luck, as Beta signups have just opened up. Simply swing on over to the beta site and submit some basic information such as your name, PSN account name, and whether you own a Vita or not. We're going to go ahead and assume that people who own Vitas will be favored for the Vita game beta.
'LittleBigPlanet' for Vita is currently slated for a June release.