You can look up online the surgery you want to go through. Most surgeries are nowadays safe, except for jaw bone or mandibular surgery, or where cheekbone is reduced to make the v shaped face. It is common in S Korea (the best city to perform this), but comes with big risk.

What surgery that you have in mind? Jaw slimming/shaping in Malaysia? I'd suggest to have this done in South Korea Thailand. The risk is death or paralysis of certain parts of your face. The post surgery won't really hurt, but you will feel bruising and hard to chew hard foods for few weeks. (members' experiences)

Thailand is not bad.