Commonly made mistakes with faces (side profile)

I'm a bit nervous posting this. (The tutorial itself looks unprofessional but it's still valuable learning.)
Even today I'm making some of these mistakes, but I've now developed my understanding.

Faces are of course allowed to vary, but these are just some basic principles I apply when drawing. For example, ears are allowed to be higher or lower, but I've seen so many examples of ears being attached to the jawline that I've made this rule.
Also, if you're drawing a child or baby, the lips protrude further than the nose.

Thank you all for a hundred favourites! I'm pleased to see this help so many artists.