How to fix my small smile? (photos)

Ever since I was little I have smiled with my mouth closed because it stretches my lips so much when I smile with an open mouth, it’s uncomfortable. I also had to have 4 of my adult teeth permanently removed just to make room for the rest of my teeth in my small mouth. Can anything be done to help me have a nice comfortable smile with teeth? I love those smiles where you can even see a tiinny bit of top gum, but when I smile you can barely see half my top teeth!