i found these a few months back, they are also hair embroideries, and I thought that they were pencil drawings, they were so tight....
http://www.flickr.com/photos/katekretz/sets/72157607012631722/

I saw some amazing hair embroideries from an artist named Kate Kretz a few years ago...I think she still does them... they look like really detailed, elaborate drawings. She uses her own hair and her boyfriend's hair.

Her website is katekretz.com and I think she has a blog too, where she shows the work in progress.