Here is a selection of storyboard frames created for an animation outlining the life cycle of HPV (Human Papilloma Virus). You can sort of follow them sequentially starting with the left column down.
I built all the scenes in 3d using Cinema 4d, then used the Sketch and Toon module (as well as falloff shaders) to create the pen and ink look. For many of the frames, I did 2 passes–one with line only and one straight pass with lighting and materials. I would then desaturate the straight render and overlay the lineart in photoshop. I found this method more flexible then having to tweak my settings in sketch and toon to give me exactly what I wanted (which sometimes worked). What’s nice about this method is that the client gets to see storyboards that are pretty close to final (camera angles models and environments are all there) and I can pretty much jump right into production mode on the actual animation once the boards are approved. These were almost as enjoyable to produce as the final animation. Some shots are included in my reel.