Would I be a good candidate for gum contouring/lift?

Would I benefit from Gum contouring/gingivectomy/Gum lift? I have been unhappy and very shy about my gummy smile for a long time. I understand that the problem is also due in large part to maxillary excess, and I have treated this with botox before with great results. However, I still feel that my gums are uneven and cover too much of my teeth. I'm scared that if I lengthen the amount of tooth showing, it will look strange on my face, however. Opinions/advice are greatly appreciated!