Will smoking weed affect my post-surgery breast reduction healing?

If you are not satisfied with the shape or size of your nose, it is recommended to visit a certified plastic surgeon who specializes in rhinoplasty procedure (nose surgery). They can diagnose your particular needs and discuss the possible interventions

Double chin can be corrected by neck liposuction as day care procedure 

When the body is injured or broken the proper healing is due to the body itself making itself healthy again. There could be a slight bruising that you might experience which is, in fact, a usual condition and should wear off in time. The performance of the surgery is dependent on your cooperation with the doctor. Thus, you must abide by the directives given to a T by your doctor. It is principally of high importance to the individual to have a good portion of time devoted to rest, to the intake of foods that are of high nutritional value, and to the avoidance of physically demanding activities as recommended. If you happen to see any rare signs, or you have some doubts, do not be afraid to let your doctor know about it so he can guide you through the whole process.

Post 3 weeks after Rhinoplasty 
- All of your bruising in the under eye area will disappear
- There might be a bit of tip swelling which can be still persistent. 
- Avoid unnecessary touching and picking your nose to avoid displacement of nasal bones(osteotomy was done) and diced cartilages(if used)

To understand the severity physical diagnosis is important. Based on that I can recommend treatments like medication, laser treatments or chemical peels etc.