Instructions
Turn on your PlayStation 3 and select "PlayStation Store" from the main menu.
Select "View All By Title" and "A to M," followed by "L" and "LittleBigPlanet."
Select "Green Goblin." At the time of this publication, this costume costs $3.90. Select "Download," and the console will automatically download and install the content.
Load "LittleBigPlanet" and select the "Create" moon on the main menu.
Press "Square" to open the Poppit Menu. Select the second icon to open another menu on the side of the screen. By default, the costume menu will appear. Select the newly installed Green Goblin costume to change into it.