My Nose Tip is Undefined and the Nostrils Are Very Wide. Can Alarplasty Will Able to Fix It? (photo)

You have what is called "cephalically oriented" lower lateral cartilages. This means that the tip cartilages point more up than out. It creates a parentheses shaped shadow between the tip and the nostrils, causing the nostrils to appear more prominent. If the cartilages are reoriented and the nostrils reduced slightly, you will get the result you are wanting.

An alarplasty will improve the width of the nostrils, but your tip and bridge should also be addressed during surgery to maintain an attractive balance.  Projecting the tip of your nose and making it slightly taller will make it appear smaller and more refined from the frontal view.