curvy
More open curve revealed
slowly moving head
A cura lily between lines ( that goes down a spine ) similar to the ones in the proposed image.
Crane up right , subtle
a human body in which the spinal column is highlighted, in cartoon like style
a human body in which the spinal column is highlighted, in a style like cecile gariepy
Subtle, hair flow, subtle
a human body in which the spinal column is highlighted
smooth face
a human body in which the spinal column is highlighted, in a pop art style