Skull and pelvis references. I actually also did a set of shoulder blade and a few vertebral (thoracic, cervical, and lumbar), but they…didn’t look as cool, hahaha;;.
These were still-life set and done with 2H, 2B, and 4B pencils and model life-sized skull and pelvis. (I got a really high mark on these :D~~). Pelvis is actually more important and harder to do than skulls, actually. To show the perspective and really understand the shape of the pelvis helped my anatomy drawing.