Do blue undertones work for watercolor portraits?

This is a practice painting of my daughter--working out skin tones, subtle shadows, and trying out a new approach using a blue and yellow underpainting.
I think the subtle cool color temperature really makes the skin look more transparent and realistic!
What do you think?
Skin tone colors used:
QOR Phthalo Blue
Holbein Yellow Ochre
Holbein Scarlet Lake
Winsor & Newton Transparent Orange
Daniel Smith Quinacridone Rose
For the darkest shadows I'm experimenting with a mix of Sap Green, Transparent Orange and Quinacridone Rose. It made for a lovely transparent, non-granulating dark brown.
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