I have a small mouth and big teeth but I think the teeth look bigger because of my small mouth. Would a lip lift help? (photo)

I also have a long space between my nose and mouth. These features are in disharmony with my face and kind of give me a "horse face" look. Is there anything at all that I can do to correct these flaws? I am thinking that a lip lift might help me? do you think it would? is there anything else I can do? maybe something to correct the small mouth? I just want these features to be in harmony and have self esteem. I will attach a pic of me without makeup. thanks for any advice