There are many forms of art; music, theater, painting, drawing, photography, and the list can go on.  Everyone enjoys their own form of art and can be good at just one or many.  However, there are no definite rules of art except those, which were mastered by the very famous artists themselves.  Yet in today’s day in age art can be in any form.  Graffiti is even considered art, just a vandalized form (to some).  With all these different forms of art memories are savored and can be revisited from time to time to remember what inspired you to create such an amazing illustration.  By having these documented and saved it gives you, as the artist, the ability to never forget what you were thinking at that exact moment.  It allows you the opportunity to give others the ability to interpret it how they wish and then further examine it through the eye of the artist, that being you.  Every little bit of the illustration furthers the knowledge the viewer has to examine, as they look at the artwork firsthand.