The back needs to be as powerful since the little girl is facing the opposite direction.
You can follow the evolution of my original idea to have a bird, and how it morphed into Harpy Boy.
I'd been batteling depression for a couple of days until I started on the color full scale drawing of him.
Somehow creating his vitality and bratty singing snapped me out of it. (Click on an image to enlarge it.)
Never underestimate the healing powers of your own art.