To truly design graphically it becomes extremely valuable to be able to create your own images instead of simply finding something similar someone else created. That opens the possibilities way beyond what a camera can reproduce or anything found in a clip-art catalog. To be an illustrator means to be able to recreate meat and put it in a vending machine or putting a tye-dye t-shirt on an apple. Graphic design ranges from tri-fold brochures to menus, storyboards, and portraits of entrepreneurs to go on the labels of their products.
Some printers and publishers prefer "vector art." That's line art created in programs such as Adobe Illustrator that allow the art to be enlarged and still remain sharp can clear. Here are some examples of what I have created as vector art.