Already have a lot of tooth show - can I still consider a lip lift? (Photos)

Hello, Would I be a good candidate for a lip lift? I have large teeth and naturally have tooth show already. Is the lip completely cut under the nose, or is just a portion of the skin layer cut and reattached to the base of the nose, thus rolling upwards rather than shortening? I also have prominent nosalabial folds and jowls-- are those in anyway helped or hindered by receiving a lip lift?