Can the D.A.O nerve muscle get damaged during facelift and neck liposuction therefore causing a downward smile? (Photo)

I had neck liposuction and revised minilift with no results. In addition the Plastic Surgeon added fat to my acne scars which makes me look rounder older and additionally I look like I'm making a downward smile. I don't know if it's the fat that was added that causes my face to head south or muscle/nerve damage? I actually look older especially my smile. What can be done to correct this? Lipo to jowls? Or do I need muscle tightening of D.A.O?

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