Frida Kahlo Portrait

This is the latest graphite portrait sketch I've been working on in my Friday morning open studio class led by Carol Zika. I worked from a photograph by Imogen Cunningham. Sometimes when I draw portraits I get the distinct feeling the subject is staring at me (maybe saying something like, "My left eye is too big!"). Eerie...

For those who may not be familiar with Frida and her work, here's a Wikipedia link, she was a noted Mexican painter, known for her self-portraits. http://en.wikipedia.org/wiki/Frida_Kahlo