I had septorhinoplasty 20 months ago, I now have callus on my nasal hump/bridge of my nose because of it. I'm having rasping/filing down of the nasal bones done in 4 days time. Will this help the appearance of my nose? (You can see the callus on my nose and its now affecting my every day life.) I'd like some information about what to expect, healing time, will I have a cast on my face afterwards? Thank you.