Using and POV-Ray, you can make realistic renderings of your PCBs. This will generate a ray tracing file, which will be sent to POV-Ray, which in turn will eventually pop out the finalized image of your PCB.
Tree of Squares, by Michael Scharrer, rendered with POV-Ray. A tree made of squares. A relatively simple adaptation of the pythagoras tree fractal with small side branches. The Scene is entirely 2-dimensional, so raytracing it with POV-Ray may very well be considered overkill. However, the rich macro features and the large variety of interesting pigments provided by POV-Ray were very useful in creating this Povray Tree.