I'm new to graphic design and have started to use Adobe Illustrator. I was wondering if someone can tell me how to make the sticker pop up art like the Gowalla logo. Below is the logo that I'm referring to:

Any help is appreciated. So for I've been using the pen tool to make the white sticker area. Then I try to add an outer glow, but it doesn't look quite right. The most important thing I need help with is the shadow outlining to look crisp. Thanks for any help.