WIP of Sophia Watercolor...

I am attempting my very first watercolor portrait (with a FACE).  The painting is of my granddaughter, Sophia.  She was sitting, leaning against a larger birch tree outside my window, strumming oner her guitar. I had to take some photos and now I'm painting her.  I'm enjoying the process and have much left to do, but thought you all might like to get a look at what is done so far.  As always, I welcome your suggestions.  The background will be the birch tree, sky and grass.  Should be muted so not to compete with my 'little princess'.  Oh, her shoes aren't finished yet.