It is important to have a procedure like Rhinoplasty, near where you live. Rhinoplasty takes at least a year to fully heal, and you will want to be near your surgeon to enhance the follow-up. If you live in Pakistan, then having your surgery in Pakistan has its advantages.
I have never been to Pakistan. However, I am a member of the International Society of Aesthetic Plastic Surgeons (ISAPS). ISAPS is world wide organization dedicated to safe and predictable aesthetic (cosmetic) plastic surgery throughout the world. There are two members in Pakistan (one in Lahore and one in Karachi). While I cannot personally vouch for them, but this may be a good place to start. For more information on ISAPS, follow the link below.
There you will find a link to the main ISAPS site. Once an the main site click the "Society" tab at the top and select "Members by Country" (alphabetical is easiest) and then select Pakistan. Hope this helps.