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

The eye socket is very different - Asians have shallower eye sockets compared to others. This cannot be easily altered. A double eyelid surgery with inner epi can open up the eye area, but you won't be able to change your entire appearance of the eye area to a difference race.

Everyone's eye and anatomy is different and impossible to look like someone else. There are procedures that can help alter things but the goal has to be realistic and natural. See an oculoplastic surgeon.

your eyes are gorgeous the way they are. I would advise you to have NO surgery since this comes with some risk of having a problem after surgery. 

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