Thank you all so much for the nice compliments!! I find that if you just relax and let yourself just make a brush stroke, let yourself make a mistake, you will get better results. It takes longer at first, but then you get quicker. :3
Aine- The colors I used are Vandyke brown for the lighter chade of brown and Raw umber (you were close!) for the darker color.

I used black on my first DD head and it did come out a little bolder than I had wanted.