Thank you for your question!You have a beautiful lower face!Botox for masseter is a good choice, and possibly not enough of toxin was injected to get the slimming effect.However, reducing masseter may cause more “jowls”, be aware!I would recommend to use - Botox: along the jaw line, superficial and address platysmal bands. We call it “Nefertiti neck”, and it will give you a better definition of jawline and cheeks will be lifted a tet.-RF microneedling( Secret Pro) with seminsulated needles for deeper delivery of heat to reduce the fullness of jawline and jowls. It may require a few sessions ( at least 3, spaced out 4-6 weeks), evaluate the progress.- I use Kybella (or deoxycholic acid), it dissolves the fat cells,( white fat better than brown fat, and sometimes may cause uneven smile if close to nerve branches, but recovers in a couple of week). Proceed cautiously, know your provider has experience with it!- Dermal fillers to elongate the jawline and the chin, and elevate the cheeks: all might help to improve the jawline.I would use all tools I have, not just stick with one.All the best!Dr.Liliya