Once again, perspective and light (or value) are the 2 main elements I’ll be starting off with.
This will be my first exercise.
If you visualize you holding the cube, with the middle shaded square being the side facing you, as you go down, you are turning the cube towards you, and away from you as you go up. The left and right are parallel to the direction you’d be turning the cube.
Observations
I noticed the second cube above & below from the middle was a regular hexagon until I shaded the half.
Cube directions are all from the middle shaded square
The length of my lines is key in presenting a different perspective. I observed this with the 1-down, 2-left cube where the leftmost edge has to be shorter to allow the left-bottom edge to connect diagonally down toward the middle.
The smaller the side, like the one 10 o’clock from the middle, the more precise the edges have to be.
The cube to left of that (1-up, 2-left) was a simple pointed-top hexagon with a 3-line intersection to the middle. I also find this one easier to percieve as an interior (perspective of looking inside) versus all the others strictly looking exterioral.
Grant Abraham 