Designing iPhone App interface graphics
I designed my first user interface for an iPhone app this weekend. Another thing I can add to my resume. It isn't too much different than anything else one can design, as long as you know the specs, which I didn't at first.
Create graphics that meet App Store guidelines. The App Store will require two square application logos, sized 57×57 and 512×512 (these two will need to be essentially the same graphic). The 57×57 logo will appear on the user's device, and will automatically get rounded corners and a glossy appearance after submission. If you want to put a border around your 57×57 logo, round the corners using a 10-point radius to match the corner rounding that will happen automatically. Although the glossy appearance is the default for app logos, you can specify not to have the glossy effect applied to your logo. The App Store will also require screen shots of your application. The screen on the iPhone is 480×320, minus the 20-pixel status bar (making a 460×320 working screen size). The screen shots on the App Store should not include the status bar.