Complex sentence: The woman's left ear is set unnaturally high and far back, parallel to her eyes rather than to her nose; this position is likely an artistic device used to continue the flow of the diagonal line of the veil's inner-right wing.
Split into simpler sentences: The woman's left ear is set unnaturally high and far back, in a location that is parallel to her eyes rather than to her nose. This is likely an artistic device used to continue the flow of the diagonal line of the veil's inner-right wing.