Can a lower blepharoplasty fix my dark circles? (photos)

From your photo it appears you are a good candidate for filler to the lower eyelid. This will help replace volume and give a smoother transition between the lower lid and cheek junction. See an expert injector near you for treatment.

From your photo it appears you would benefit from a lower blepharoplasty to address the lower eyelid area and an upper blepharoplasty to address the upper lid. This will remove excess skin and give a rejuvenated look to this area. You also have festoons. These are more difficult to treat. ...

There is no safe or logical way to get your eyes wider apart. You should consult with a creative makeup artist who can give you pointers on how to use makeup especially on the outside of the eyes that will create an image have having wider eyes.