Christmas Concentration

Well, it had to happen I guess....today my mother decided to put our unique Xmas tree out (it's very small & silver) and decorate it. We usually do it on December 1st but not this year! With this particular shot I decided to focus on the Aperture and play around with a few of the settings and in the series of shots I took, I thought this was the pick of the bunch.
I just like the look of concentration on my mother's face as she puts the xmas balls into place. What do you think?