Improving / increasing the quality of line-art of SVG file (blend file included) My goal is to export the image as an SVG then convert it to an EPS using Inkscape.  But the SVG line-art isn't well defined and the SVG file is blank how can I improve / fix this?  I included the blend file below.

I also tried saving it as a PNG file and doing a trace bitmap within Inkscpe but I had the problem of the lines not being well defined. 

PS: I'm using Blender 2.82a.  I'm also willing to try a different process if someone knows of one.





Also this is how I made it.
https://youtu.be/rTVzdthjE5Q


  Update:1
  I made the changes Jachym Michal suggested in the comments and made the Crease Angle 180.  see attached image below.  The edge lines still aren't "sensitive / isn't what I expected" they don't follow the edges of the image.
You can mark edges manually to render them using Freestyle.
But the 'mosaic parts' still needs to be image traced outside of Blender.


Select Edges you want drawn in Freestyle
Go Edge > Mark Freestyle Edge
enable Edge Marks in Freestyle Line Set.