I Have Double Eyelids but Want to Get Bigger Eyes--what Kind of Surgery Do You Recommend?

Your photos suggest constriction by the medial epcanthal folds.  I recommend a release of the epicanthal folds to widen the horizontal axis and this will balance your almond shapes nicely.  Although I can raise your folds, I don't recommend you change the pretarsal folds as they are already at the top of the natural balance point for Asian eyelids.  Beyond this, the folds may appear "surgical".

I would suggest correcting what appears to be mild ptosis so that your eyes open up more widely. The folds themselves are fine. Making the eyelids open more widely will make you look more alert and enhance the appearance of your eyes further.

  First off, it appears that you have beautiful appearing eyes and do not need anything done at all.  But it may be hard to tell from the single photo that you sent.  There may be a small bilateral ptosis present, in which case you could consider CONSERVATIVE bilateral ptosis repair.