Talking about parallelepipeds' value: In geometry, a parallelepiped is a three-dimensional figure formed by six parallelograms (the term rhomboid is also sometimes used with this meaning). By analogy, it relates to a parallelogram just as a cube relates to a square or as a cuboid to a rectangle.  In Euclidean geometry, its definition encompasses all four concepts: parallelepiped, parallelogram, cube, and square.
 So what I made was simple: copy the whole design and mirror it with a thicker line to turn the two pasted layers into a three-dimensional view. 
 I did enjoy different formats and techniques. Thanks to Slurp Tv for whole support and help with some of the stuff I've shown in this project. I'm happy to share with all of you and I'm still spreading these prints if you desire to purchase some of them contact me.