All you really need to do is to paste a working URL Web address of the image you want in the submission form of the service you are using. The key point is that the image must be available on the Web for any user. This can be at your Internet Service Provider's server. By using this space allotted to you, you may upload your image so others can see it. In order to get a print picture to be a Web image, it has to be scanned or photographed by a digital camera.
Many film developing services now offer scanned images on disk or via Web download.
With lower prices, many people have purchased color scanners. Ask around to see if someone you know could scan your picture. Once you have the image in jpg or gif format, be sure it is also practically sized. If the pixel height and width of the image is larger than 580 wide and 360 high, many users will have to scroll to see the image. Even more important is the file memory size of the image.