There are special considerations with African-American Rhinoplasty Surgery.
You should consult a board-certified Rhinoplasty specialist experienced in Ethnic Rhinoplasty. You should also see many photos before proceeding.
In general, African-American noses have thick skin, and weak cartilage. There can also be wide nostrils, a broad tip, and a shallow bridge.
Feel free to email me a full facial frontal and profile photo, and I'll gladly share my thoughts with you.
I've attached a link to my rhinoplasty gallery for your perusal.
I hope this is helpful, and best...