Do I have ptosis and can my uneven eyelids be shaped like Selena Gomez's? What surgery to do I need? (photos)

You have ptosis.  The eyelid platform lays on the upper part of the eye and shades the upper part of the cornea.  Properly done, correcting the ptosis will make your eyes look brighter.  A personal consultation is needed to determine how much eyelid platform to show  which is controlled at the time of surgery with an anchor blepharoplasty.  Selena shows about 2 mm of upper eyelid skin.  That would be about right for you.  This is not about "Westernizing" the eyelids.  Will this make you look like Selena?  Not really.  It will make you look like a much better version of yourself.

It doesn't matter what you call yourself, plastic or oculoplastic surgeon, your eyes will not look like Selena Gomez and you need to know that up front.  Good luck, Jane