Thanks Mari,
I used a photogragh as a reference. Eventually I will do an oil painting of her and ask her to pose several sittings for me.
That is funny that you mention composition because this is the 2nd drawing I did. The 1st on was a lot bigger and I soon realized that the hair would not fit in so I restarted.
I am used to working on 14" x 17" instead of 12" x 18" but before I used to do all charcoals on 12" x 18". I also did not want to draw too small because it is a bit tricky to do the details. I will sure keep in mind the composition when I do the oil painting. Thanks.