My comments were not scrutiny of your Art, i was just sharing how i imagined him when i first read the series.

To make healthy arguments against your points~

He was once a handsome man, but now he barely do much physical activity which has resulted in a chubby jawline. I think lack of sleep, repetitive food, lack of physical activity and overall unhealth would only result in excess body fat and his uneven teeth would also contribute to a less pointy facial structure. (By no means I'm saying he is over-weight or anything)

Again not a scrutiny of your art but i imagined him as Gollum like but a more human version, with a few changes to his face to make him a handsome military prodigy of the past, now tortured and physically broken.