In high school I started to touch on the art of Poetry. In time I ended up combing my love for illustration with my new found love of writing. My teacher at the time pointed out an artist who had mastered this style 2 centuries before I even thought of it. So much for being original.
That artists name was William Blake.
Since my discovery of such a talented artist, I found early in my courier that there are no set guidelines. That everything and all are up for grabs in the realm of design.