Diary of faces Georgette Chen

I've developed a real desire to become better at creating faces and found Sharon Tomlinson's online course 'A Diary of Faces', which gives detailed tutorials in producing realistic portraits. Using examples from artists, she examines how they create faces, teaching how to draw profiles, 3/4 views etc, as well as how to shade and layer paint and medium. Its more technical than some classes I've viewed and seems to suit where I'm at with my art.
Research is an element of each project and has given me a good excuse to brush up my art history! The first brief was to study Georgette Chen, (  1906-1993) a painter from Singapore, who broke the mould by becoming one of the first acknowledged female Asian artists.
This is the original I worked from:   


The eyes had very distinctive iris shapes and the nose presented its own challenges.I found the coiled hair quite tricky too. I followed the recommended palette but in retrospect probably should have made my own choices as I found the greenish tinge in the underpainting a little overwhelming. I still find working from dark to light counter intuitive after using watercolours!
I enjoyed finding out about other Chinese painters and discovered some great art in the process. Contemporary artist He Jia Ying and Pan Yuliang were two of my favourites.

The painting I've done has more depth than this photo suggests.
It appears here looking alot more washed out. I think I captured the steady gaze but the left eye begins too far from the bridge of the nose. I need to remember to photograph my sketches, so that I can
work further revisions from them.