With this level of skin folds, non invasive treatments are unlikely to work I'm afraid. I'd recommend a review with an oculoplastic surgeon to discuss options.
A little botox in this area can help reduce the bunching of the skin when you smile. You don't have to have crow's feet to have botox here.
For a congenital ptosis repair, you have very good symmetry after your surgery. I would caution against chasing perfection with further surgery.
Its impossible to answer this query without seeing a photo of your actual eyes, in a photo with flash. If you do have a subtle ptosis, you often end up using your brows to lift the lids higher which could be what you are describing. Depending on the degree of ptosis, and tests carried out in clinic, there are different options for correction of this type of ptosis.
If your lower lid blepharoplasty didn't involve skin removal and was carried out via a transconjunctival approach, you could benefit from a skin pinch blepharoplasty. Ablative laser treatment could also tighten the skin in this area if you want to avoid further surgery.
