These men speak the truth. You capture Kate's essence, as Pined Alot says, and render her eyes wonderfully, as uffington and 22dates attest.
And now you know what your public wants - a Kate with more eyes. Picasso would have done it.
That's a great picture, and the hair is sensational.
Are you an admirer of George Romney, blackspitifre? He too, was a capturer of feminine beauty in a way which makes you feel the portraits are alive.