CREDIT
First the credit i didn't use this image directly![Image](http://fc01.deviantart.net/fs70/i/2012/053/2/e/yellow_ring_balls_by_andrea1981g-d4qkrse.jpg)
BUT i did use its parameters that in this case is almost the same so i want thank
Andrea1981G http://andrea1981g.deviantart.com/ that shared them here
http://photocomix2.deviantart.com/favourites/#/d4qkrsecreated with M3D edited with GMIC (details below the images )
I must chose one but ,as often i have too variant and i like them all so please use the pool..1)
2)
3)![Image](http://www.gimpchat.com/files/158_welcome-to%20my-nightmare-2-res.png)
I rendered twice bigger (3200x2400) then in gimp i used gmic to apply the graphic novel2 filter on a dup layer, dosed the opacity of the dup to fade a bit the effect
in one case i used also Gegl C2G to modify the greyscale (again i applied to a dup layer set in value mode over the original)