There are several ways of creating a graphics file

Create it from scratch using an image-editing application (see next page). The graphic titles and icons in this presentation were images created from scratch. Here are some other images I've done.

Open an already existing graphics file (clip art, stock photos, PhotoCD (example), etc.) I used Photoshop to put this collage together entirely from PhotoCD images (none of the photos were taken from prints).

Digitize an image using a scanner or image capture device

Have a program write a graphic file "on-the-fly" Example