Metalpoint in general (and silverpoint in particular) is a very old technique that many people just don’t bother with today. That doesn’t mean that it is not capable of some amazing affects, however. In this video, DrawingAcademy.com details silverpoint techniques and materials. For my students, I use parts of this video in class; but because it’s so long, we often don’t get a chance to watch the entire thing.
link to Drawing in Silverpoint-Almost Lost Secrets of the Old Masters