Asian rhinoplasty takes into account the unique features particular to Asian patients in order to give each patient a nose that looks natural. With any ethnic rhinoplasty, the goal is to improve the appearance and/or function of the nose without making it look altered.
The link below contains some graphic pictures and video, but if you are curious about how and where fascia is harvested, it will show you all you ever wanted to know.
Fascia is a pliable, thin graft material that provides great coverage of contour irregularities, or can be sutured into...
The tissue along your columella needs time to heal. If you smoke, stop. If you're not a smoker, great. The longer you wait and allow the blood supply in the area to heal the greater chance you will have at a successful revision, but I would give it a minimum of 6 months.