1st of all your features are very harmonious. Everyone is asymmetric and we all have a level of asymmetry especially to our faces. Botox does help to relax some of the muscles in the face and can certainly improve asymmetry if placed strategically.
First and foremost, most people are asymmetric, so it doesn't necessarily need to be fixed or improved. That said, a combination of botox and/or fillers can often make things more symmetric in the right expert physician hands.