iZach

Here's two guides to get you started (if you want):

http://www.sitepoint.com/how-to-draw-an-iphone-icon-in-illustrator/
http://www.wonderhowto.com/how-to-create-glossy-iphone-style-icons-illustrator-cs4-346113/

They helped me when I started out.

PS: Definitely start with the first link. The second one shows a method similar to how I made your avatar, but it's a bit tricky.

I'll give you a few links later tonight. I'm not at home now (on my phone) and I have a few tutorials bookmarked on my computer.

Sorry. I uploaded a different one in that thread. The square one I posted originally was only like 720 x 720. It's fixed though

I finally got it up. Sorry it took a while. :/

I posted a few examples, I'll make a Cydia-ish one too.

What kind of avatar would you like? :)