Options to improve an Extra layer of skin on the left eyelid
The muscle insertion on the upper eyelid skin is asymmetrical creating a double fold on the left side and a single fold on the right side. More photos are required to determine whether or not a single left-sided upper blepharoplasty skin removal only will be of any benefit.
It looks like you have 2 folds on the upper eyelid. This can be caused by the way the muscle inserts onto the eyelid itself. I recommend finding a board certified plastic surgeon to have an exam in person. You can talk about your options. Typically blepharoplasty, or eyelid surgery, is a good solution. Your surgeon will discuss with you if anything else needs to be done during that surgery to correct the appearance. Good luck!