Am I a good candidate for a lip lift?

On looking at your pictures, one can see 2 things: You have a slightly long lip, you show teeth when your mouth is relaxed and slightly open. This means you probably have a slightly long maxilla (upper jaw bone). In cases like yours, the lip lift may result in increased tooth show at rest. This is neither good nor bad, just a matter of preference. But that will impact how much shortening you will want to get. To get a better idea of tooth show try measuring like this:  Practice in front of the mirror by putting your two index fingers under your nose and pulling up gently until you see a distance that you like. Don't worry if the shape of the lip looks funny. If the fingers are too close it will look like a bunny rabbit (too much tooth show) If the fingers are too far apart it looks like a snarl. But once you get an idea of that distance between nose and red border of the lip you are set to go.
The most important thing is that it gets you used to what lip lift plus increased tooth show it will look in YOUR face.If there is more tooth show than you like there are several options. You may try a lip implant as it lengthens total lip length. A lot of my patients choose this option. Another option is to shorten a tiny bit less to get a compromise between lip length and tooth show. Finally, a cosmetic dentist may shave a millimeter or so of your frontal incisors to lessen tooth show.Finally, you are a young good looking person so I'm sure any result will look good- even if you don't do anything! Check on the link below for more info