Panelling tools surface

I new to Rhino, could someone please help me with my project. I have a couple of questions that I would very much appreciate help with.

  1. I am not sure how to get rid of gaps between the pyramids.
  2. There should be one light source but the surface looks like there are multiple. The shades of the black and white seem out of place. Can i fix this up or is this all correct.
  3. Is there a way to take each pyramid and create a representation of it, that I could print and use to fold the pyramids in real life. I’d need the pyramids to have folding guides etc.
  4. Ill be making this surface in real life. If you have any tips or see anything incorrect if you have dealt with this before I would appreciate any guidance. A possible issue would be, as seen in the following photo, regarding the bottom of the surface. Can I make the surface flat and smooth on the bottom?

Thank you so much for any help!