3 months post neck and lower facelift and my smile is crooked. (Photos)

It is still early post op and it is likely that things will improve. I would see your PS and be formally assessed to see how your facial muscles and facial nerve are functioning. . 

A crooked smile after facelift usually indicates stretching or injury to the marginal mandibular branch of the facial nerve or the buccal branches of the facial nerve.  In 3 months there is still a 75% chance that your smile will return over time.  One thing that can be helpful is the application of DC electrical current stimulation.

What you are describing could represent damage/injury to the marginal mandibular nerve, which depresses (pulls down) your lower lip.  Unless the nerve was cut, it usually regains function, though this can take several months to take place.  To treat your smile asymmetry, some neurotoxin (Botox, Dysport, and Xeomin) injections to the "good" side can balance the smile while the nerve regrows.  The other things you are describing (the ear pain/numbness, for example), are likely due to injury to a different nerve (the great auricular nerve), and recovery from that injury will not necessarily track with your smile recovery.  

I would like to acknowledge your frustration with this situation, as you entered surgery not planning for these complications, which can happen to some people.  What you are describing with your smile is a rare complication of face/neck lift surgery, though the ear complaints are more common.  I am sorry you have had this experience, and hope for a fast recovery.  Good luck!