For many years now, experienced injectors have stopped "chasing wrinkles," in other words have looked to the causes of the wrinkles and folds and instead treat these. So, for many years, if smile folds were the concern, then fillers were injected directly into them. However, this often didn't totally solve the problem or even created a somewhat distorted artificial look. Once we learned that the development and deepening of the nasolabial folds was actually due to loss of volume in the fat pads of the cheeks above and to the sides of them, it became an easy fix to replace that volume with specific HA volumizing fillers. And, lo and behold, by reflating the cheeks, we so often significantly improved the smile lines without needing to treat them directly. From the cropped photos provided, there does appear to be volume deficit in the cheeks, so restoring the volume with an HA volumizing filler would appear to be the first, and very likely, the only step needed to provide the improvement desired here. You would be wise to consult with an experienced, board certified cosmetic dermatology filler expert. Best of luck.