Why is my right eye bigger than my left eye? (Photo)

Thank you for your question. Please take comfort knowing that nobody has a perfectly symmetrical face, even through facial plastic surgical and non-surgical procedures. I suggest that you move forward and consult with a board certified facial plastic surgeon.
Best wishes,

It appears your right eye is more bulging or your left eye more sunken. See an oculoplastic specialist for evaluation. Treatment is possible, likely orbital surgery, depending on the cause.

Thank you for sharing your concerns and photo. It appears from the photograph that you only have a mild degree of typical asymmetry. Please post a few more photos for better evaluation or see an Oculoplastic Surgeon for in-person consultation. 
Good luck,

Based on the photo, there is little asymmetry between your eyes. You would want to schedule an appointment with a board-certified plastic surgeon for an in-person examination.