From the photo you attached, you seem to be a good candidate for a lip lift as your philtrum seems to be long enough. Re: the scar - of course post-op scar can be minimized by an appropriate surgical technique & post -op case such as applying silicone-based product, but - based on my experience...
I recommend fillers to soften the nasolabial folds themselves and also lift around the mouth and cheeks to build underlying anatomical support. In our practice we combine Sculptra with other fillers "layered" on top and lasers, skin tightening treatments such as Thermage, Fractora, and Renuvion...
This is my expertise and a huge portion of my practice. Asymmetry is normal and expected. Buccal fat pad gives slimming not symmetry. Masseter botox will make you slimmer and make the jawline more loose. Fillers help give shaping and contouring. If you want perfect or close to perfect symmetry...
