Pocelain Veneers or Composite Veneers (bonding) are both conservative restorations. Cost is a major determination to decide. Ceramic veneers to not stain but if you chip one are more dificult to repair. I strongly advise grinders with veneers to sleep with bruxism appliances....
The Frenectomy will address the spacing between your front teeth if you have orthodontics, but will not change your smile very much. The double lip appearance may be from a skeletal abnormality, but this cant be determined from the photo you have presented. Seek the advice of a Board...
I am so glad you asked that question. The empty space is called a Deficient "Buccal Corridor". It does make the smile look esthetically incomplete. From your picture, you also appear to have protruded, large incisors. The esthetics of your smile can be improved with orthodontics to widen the...