How to improve a mouth that looks like it's "sitting too low"? (photo)

Dear RS docs, I am 37, and have a longish face with a longish philtrum (16 mm), although my tooth show on rest is adequate (large incisors, no gummy smile). I can have a lip lift, but my concern is that my whole mouth looks like it is sitting too low on my face, and I don't know what would help that. Am I imagining things or is it in fact low? What would help that - a corner lift? Or maybe an extended lip lift that also lifts the lateral parts of the upper lip? Thank you!