It took me a while to get up the courage to do the face and arms but after examining medieval and ecclesiastical embroidery I got up the courage. Mary Corbet's site at Needle'n Thread is probably one of the BEST for exploring embroidery of this nature.
National Embroidery Month
If you're in Yellow Springs Ohio area, the Mad River Valley Chapter is having a show a the YS Library as well as ongoing events.
For info please visit YSArts