How about a lesson on good and evil in a nice simple tattoo form or style. I present to you "how to draw good and evil", step by step. This is a concept of an angel in love with the devil. As you know there are many references to such concept ideas I just really liked this one which took a couple hours to complete. I think you will enjoy this lesson because it's not only unique and romantic, it has a nice flow and both figures are from the side view.