How Many Times Can You Perform Blepharoplasty (Upper Eyelid Surgery) on Someone? (photo)

I've had blepharoplasty done on me once already. That was 2 years ago. I want to have it redone because my first procedure was too small/natural-looking. I want my eyes to be slightly bigger. The current lids on my eyes is so natural looking, that when I close my eyes, the scar/line is nearly invisible. I personally believe that if I were to make it even bigger, the new eyelid would pull the old one, so there wouldn't be a problem having a second procedure done on me.