Your bridge looks broad, correct, does it deserve narrowing? Absolutely not, at least not in a direct and primary way, that'd be a catastrophic technical decision with hard to repair consequences. Afroamerican noses look broad-bridged not because they actually are but due to the missing bridge, what we see in them is the bottom of the nasal pyramid, the part of the nose that's closer to the maxilla/face, hence it is broad and exposed for lacking the bridge. Imagine a camping tent or a house roof, that's the bridge of a nose, with a very sharp and well defined top of it; now mentally cut it horizontally at any level lower than it's top; the lower you cut it the broader the top of the tent/roof/nasal bridge is going to look... without any actual physical broadening. Treatment of these noses is dorsal reconstruction of a neo bridge, with height and shape to be discussed with the patient, made of rib cartilage grafting; never ever alloplastic material, prostheses or fillers. Seek the advice of a well-experienced ethnic rhinoplasty surgeon. See the link below to see more how this is done.