Value does all the work, then color gets the credit
You should do a new self portrait - it is always interesting and insightful to compare the differences in self portraits over time. This one has the look of a serious and strong personality.
Lovely, I think this one shows the calm before the storm. I would bet you have seen a lot over 10 years and just look at where you are now, a wonderful artist. I agree with Karen, I would like to see another.