there's probably some artistic connection since other ancient civs also depicted thunderbolts with prongs on either end, like this depiction of marduk https://t.co/2ugI0FcNXr
it would at least be more helpful if you draw in stuff like eyelines to make sure the face wraps around neatly but it only works if you already have a good grasp on the actual 3d structure of a face
nobody asked but my go-to is the sphere + cheekbones/jaw crash test dummy approach