Drawing of Red-Haired Erotic Nude

Here is my detailed drawing of the rear view of an erotic nude.
I created it exclusively through the use of line; the background is cross-hatched. The cross-hatching technique is a time-consuming one, comprised of creating lines that intersect other lines.
This image is 9 x 4.5 inches.

I will, more than likely, create nudes in acrylic on canvas later this month.