3D DESIGN: The opacity and color of each strokes is based off of different over-lapping layers. As each layer overlaps the other, the lower layer will have less opacity, and a different color stroke.
REVERSE IDEA: The reverse / mirrored text plays off of Leonardo da Vinci's own personal notebooks and sketch books. Either I am so paranoid that people are going to steal my ideas, or I'm dyslexic...?