clearly that's a much better source than my guesswork, but you can see on his exemple some things i've pointed out:
->the edge starting at the corner of the mouth that aims at the base of the ear
->a strong shape starting on the nose and cornering the mouth that doesn't feel so strong to me atm on your model (even if the idea is there)
->the star on the lid further out
as for the edgeloop going under the chin that i suggested, that's something i like, but that i don't see very often.
Ultimately the topology depends on the model, there shouldn't be juste one type that's applicable for every humanoid, especially as one goes further in caricature designs. Needless to say the exemple you're giving is one to follow, though.
Here's one (not by me) i've had excellent quick result rigging.
It contradicts some of the things i've said, but just to show it's not an exact science