The fifteen minute face...

 ...without eyes.  (Apologies to Billy Idol for twisting his lyric)

The two 10 minute drawings

 Just kinda gettin' warmed up with these.

Gestures of Dylan

 Our last session with Dylan for a while yielded some wonderful poses.  Gestures, anyone?

45

 I was really enjoying this one.  Of course, foreshortening is a favorite of mine.  I love the way the pose draws the eye across the legs and then into the torso in a reverse Z pattern.  I think leaving her head out of the drawing gives the sketch more legitimacy than having the eye stop with her face.  Or I could be wrong.

Fifteen

 So many shadows to work with that I didn't progress as far as I had hoped.  I like the texture that I applied, though.

The other ten minute pose

 Again, I was fascinated with shapes and wasn't concerned about creating a full figure.

First ten minute pose of the session

 I was really getting into the various shapes and didn't care that I didn't get even a wee bit close to a finished sketch.  Lots of smudging and sculpting with vine charcoal.