Creating your own Wallpaper for your iPhone is a very simple task. You only need one piece of knowledge and that is that the iPhone's screen has a native resolution of 320x480 pixels. As long as your images are at this size, you can use virtually any program (Paint on Windows machines) to create your own custom iPhone wallpaper. Just make sure the final image is 320x480, and use iTunes to sync your new custom wallpaper into your iPhone or iPod Touch.

Keep in mind that not all images will make good iPhone wallpapers. You must at least identify a section of the image that can look decent when stretched out and modified on an iPhone.