Customize your iPhone home screen with this collection of 12 app icons. This download includes icons for your notes app, music, maps, zoom, browser, messages, camera, mail, phone, weather, news, and calendar
After checkout, you'll receive a link that will allow you to download the zip file containing a folder with the art files. Once you've saved the images to your camera roll you can follow a tutorial on how to update your app icons -- this one does a pretty good job of explaining.