How to make your own iPhone Wallpaper
Creating your own Wallpaper for your iPhone is a pretty simple task. You only need one piece of knowledge and that is that the iPhone’s screen has a native resolution of 320×480 pixels. As long as your images are at this size, you can use virtually any program to create your own custom iPhone wallpaper. Just make sure the final image is 320×480 and then 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. Check back often as we will be constantly updating this post! =)