The drop shadow is a really cool effect and I like that her shading is calm in a way here, it looks like it's drawn.

The edgelines not surrounding the shirt and cutting in the white parts, making some edges stand over support that drawn look a lot and that the ones in her face match her skin tone is great

I like the simplicity and silence the render creates, Catherine looks so natural and like she pulled off her mask in this render.

The shading is so slight and pretty, I really like it, the white outlines or "shadows" really are your trademark, they accent the shadeles shading a lot.

I like the shines on the nose and lips, they detail her face very well.

The music matches the minimalist style and her opened hair, the shadow adds depth to the render, like this is the Catherine from the inside.

She looks just wonderful the way you show her