Great question! Looking at your photos, you actually have very nice lip anatomy, so you are already ahead of the game in terms of aesthetics. The nice thing about fillers is that they can be used very successfully to correct asymmetry in the lips or in other areas of the face, to enhance your natural beauty. Another nice trick is to do what is sometimes called a "botox lip flip", where we inject a small amount of Botox or Dysport in the area directly above your upper lip, to help the upper lip turn out more; this makes it appear slightly fuller (even without adding fillers). I believe this might work well for you to help you accomplish your goals, along with a small amount of filler such as Restylane or Juvederm. Best of luck to you :) Warm regards, Dr. Barko