The first thing I will let you know is that no treatment will really reliably address your biggest concern which is how the lower eyelid wrinkles when you smile. I will also strongly caution you regarding the so-called "ponytail lift," which is a proprietary example of a more general type of...
I would not go back to your current surgeon for help. It is highly unlikely that they know how to approach this. To answer your question, no botox will not fix this. For that matter, filler will also not fix this. For the purpose of discussion here, I will assume you have not flipped this...
Having one eye bigger than the other is mostly due to genetics and age. Uneven eyes don’t need treatment unless caused by a medical condition or if their vision is impaired.
If it is a cosmetic concern, we recommend treatments such as Botox, a brow lift, or a blepharoplasty procedure.