Is narrowing the nostrils from the inside the same as doing it from the outside?

 Narrowing the nostrils can name performed at a variety of techniques which include incisions on the inside and outside of the nostrils. For only mild widening, the incisions can be placed on the inside. If significant widening of the nostrils is present, an external incision is required.

Part of the decision-making process in choosing between these two incisions is what shape you are looking to get. The internal incision isn't visible from outside, but will usually give a more rounded look to the nostrils. The external incision generally makes the nostril less rounded. It depends on what you want to achieve shape-wise, and not solely on incision placement preference.