I don't live to post-process: it's a chore, and I'd rather be out shooting. But part of the fun for me in post-processing pictures is trying out different Lightroom presets and seeing what I get. I'll first create a virtual copy which can be quickly discarded if I don't like the results (easier for me to play around with a virtual copy instead of repeatedly ctrl-z to undo things). Then it's preset play-time.
When I tried out a black-and-white preset on a Sadie photo I got a rendering that very much looks like some of these super-detailed graphite drawings that my wife loves. Other than making some minor exposure adjustments after applying the preset I cloned out a skin tag that Sadie has on her lower left eyelid.
(Shot with the Nikon D300 using the 50mm f/1.8 lens; aperture-priority with aperture set to f/2, camera chose 1/250 sec; ISO 200; matrix-metered; cloudy white balance; normal JPG.)