Had just about forgotten about using Voronoi Stipper output fed into G’MIC Polygonize (Delauney) to get a better truss. As a side, had to pull a 14 and have to do the same in a few hours (so might have missed some things in the rendering process). lol
https://www.flickr.com/photos/163034485@N03/52221294421/sizes/o
This is rather nice.
Not sure if this is you missing something or if it is part of the render process (the latter, I think), but there’s a partial outline around most of the outer parts of the flower (better visible in the full sized flickr image). Going in with a brush and removing it would make this even smoother/cleaner.
Anyway; Nice result!
Yes; forgot to stroke the perimeter before adding the rest of the magic, Jade_NL. Was too tired to have noticed this until I was at work this morning. Will try to do better if I render another one of theses trusses. 
Wickered Dahlia
Didn’t feel like starting another thread for a similar type of render. Let the dots vary in the voronoi stipper step which led to the wicker like result hence the title. This time I didn’t forget to stroke the perimeter. lol
ref: https://upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Dahlia.22.JPG/1200px-Dahlia.22.JPG
https://www.flickr.com/photos/163034485@N03/52223656333/sizes/o
