This person's nose is not the only part that looks narrowbut his face as well.It's also the visual effect that the surgery has made.
His nose looks blunt because the length of his nose is not in proportion with the width.The length is too short in comparison to the width. Increasing the length is the best solution to make a nose narrow. It's the same thing when you place two arrows on the edge of a line and turning them backwards which makes it as if the line's size have changed.
Increasing the length happens according to raising the nose and lengthening the tip.
Visually as the nose gets bigger the face looks smaller. In contrast when the nose gets smaller the face looks wider.