A number of different surgical techniques are available to increase the projection and the refinement (pointiness) of your tip. Conservative excision of cartilage in the tip of your nose, and suture techniques can be used to increase the refinement in your tip. In addition, cartilage grafts (pieces of cartilage from your own body carved into specific shapes) can be used to increase the projection of your tip and change the shape of it.
Changing the projection and shape of the tip can alter the proportions of the nostrils and the base of the nostrils, and sometimes modification or narrowing of the bases is necessary to restore the appropriate balance.