I decided to make myself a pretty moving background for my desktop.
This is pretty simple looping animation of a blueprint of a gem.
Actually it looks a little like a rupee from the legend of zelda now that I think about it... Eh, it's just a generic gem...
I'm using VLC's set as wallpaper function to make it my background, this would probably also make a good screensaver though...
Rendered using Blender Internal and Freestyle.
I pretty much learned most of how the system worked using this video: http://www.youtube.com/watch?v=dAtJ72G9L38
It's lacking in some places but mostly good.
The main process was to first model the object as simply as possible, then giving it a material with 0 alpha masked (by setting it to mask it blocks the freestyle lines on the same object]. I then made a nice looking sky gradient and added a grid and subdivided it a couple of times. I edge marked everything I wanted to show (ctrl + e; mark freestyle edges in edit mode] then divided everything into object groups so I could exclude or include certain objects. The arrows required me to first use a 2 vertice line, then after I made it, I extruded it away from the camera a little (remember, orthographic camera) and used edge marks to make it show, similar thing with text. Last thing I did I added effects to make it pretty (I used backbones and blueprint ellipses and squares and played around with making those work with silhouettes, contours, edgemarks, or a combination.
You can see with the other two I made, the effect gets worse the more complicated it gets. Using alt + D instead of shift + D allows you to duplicate the objects while keeping them linked, so I'd recommend that.
Really other than the basic process, it's just trial and error to see what looks nice.
Hope this helps!!!
Realy nice, a tutorial how to make this function by my self would be awesome ! :D