It's a small spoiler but I'll answer since the hints are already in the first chapter. The slender arms and legs and boney waist are supposed to symbolize starvation and weakness. The mouth starting from the head and ending at chest around the heart symbolizes that it cannot think rationally...
I can't draw for jack so I'm kind of proud of this one. Don't care that it isn't exactly what I wanted it's good enough. Though I did get lazy. I wanted too keep shading and the sword clearly isn't done but my hands hurt so screw it. I'll put the novel link if ya want to get a better idea of...