After about half an hour I ended up with what you see in the lower pic. And coming back to it for another half an hour the next day it evolved into the top image.
It's funny how things will turn out, looking at the first piece I felt it was really silly looking. Kind of insect like but just goofy. At the time that's exactly what I wanted, but returning to it I thought it would feel better being a more serious piece, so I did what I thought would make it feel more believable.