Asian Double Eyelid Surgery, for the Second Time?

In order to achieve a greater definition in the inner corner of the eyelid, you will require an incision in this area, This has the potential to create a visible scar and is generally not used for this reason,

Timing- 9 months is ok time to start thinking about revision, 12 months is probably a touch safer in principle especially if you're happy with the job your surgeon did.
Increasing the fold- this is possible and done frequently, the danger often is making the crease too high in the first place and THAT's more of a reason often a revision is sort coming from other places.
Cutting the corner of the eye- what's you're talking about there is epicanthoplasty, what us Korean Plastic surgeons call "front opening". It creates an impression of bigger eyes but also has the effect of Eurasianising the eyes too. But the biggest thing that give the bigger eyes impression is to add in a touch of ptosis correction which is to shorten the mechanism of eye opening with sutures, obviously this needs to be done with precision and precaution. Some times "back opening" or opening up of the corner of the eyes outward closer to your ears is done to change what we call a tilt but this is less noticeable and less of a "bang for a buck" and to be applied in only specific circumstances.
Safety- Make sure you go to see a qualified specialist plastic surgeon or oculoplastic surgeon in your area.
Wish you the best in your journey.
Dr Leo Kim, Specialist Plastic Surgeon in Sydney