Within the Veins of Poprox Muhghee

I began by using extrude, cut, and smooth on sphere primitives. Then, I placed the spheres in a wiggly tube. I hoped to include more spheres, but my time was exhausted trying to lighten this render. It was very dark so I made a few adjustments in the occlusion settings. With more time I would also like to achieve a larger contrast range from white to black.