Mild eyelid ptosis surgery
You may be a candidate for cosmetic left upper eyelid ptosis surgery, using hidden inside eyelid approach. See video and link below.
Thank you for sharing your question. Your mild ptosis can be surgically corrected by an experienced Oculoplastic Surgeon. There is no need to rush into an operation since it is not very noticeable. You see it more in photos, because you are accustomed to the way you look in mirrors. Good luck,