The difference in the space between lower lip in chin is great, also, the one on the right seems to have a squarer jaw, and less-highly-arched eyebrows, along

The difference in the space between lower lip in chin is great, also, the one on the right seems to have a squarer jaw, and less-highly-arched eyebrows, along with paler lips. Wider neck too. In summary, the one on the right looks more like a man. Personal opinion, but I think I've provided some evidence to support it.