Facial Asymmetry and Paralysis After Botox

In your photographs it does not appear that you have smile paralysis. One side of the face can be fatter than the other because two sides are not identical. Botox should be on its way out. If you are able to move all your lip muscles, can speak, chew and swallow then you do not have to worry. If you feel your condition has become worst then see a neurologist.
You still have a beautiful smile and your face appears symmetric.
Regards

I understand that your smile is important to your career so take what I say with a grain of salt. Botox typically lasts only 3-4 months on initial injection. If Botox caused what you call "smile paralysis" then it should be gone by now. The pictures you submitted are all at an angle, making objective commentary impossible.
Your first picture already shows you with very thin lips to begin with. This did not change on the other pictures. he only thing that I see is that you can't bring the corners of your mouth up quite as high as before the Botox. I can't comment on asymmetry because your pictures are at an angle.
You should go back to whatever level of symmetry or asymmetry you had before the Botox once its effects wear off. I would not focus on that area because the chances are that you are the only one that notices the difference. Also speak to a makeup expert as there may be a technique for makeup application that may camouflage your concerns temporarily until the Botox wears off.
Good Luck.