Young Woman 2 Vine Charcoal Quick Drawing

Have been working with some Vine Charcoal drawings last couple of days
Thought I'd post them.  These are quick drawings, quite rough, nothing fancy,  or extra fixing done.
I often like to use ball point pens to do this , as you can't erase those and I like the challenge.....Of course like anything else, the more you do these, the more you learn and the better you get....

 This one was done with charcoal and conte for the hair.......

Close up.........

Though hair not finished, or any work on features will be leaving these as is, my challenge was on doing these quickly, less than 10 min or so each.......

Both are drawn in my sketchbook  size about 9x12"each.
This is how I do my sketching and drawing.For these quick one's I like to just leave them alone after the time is up. :)   Thanks for looking, love to hear from you......