A method of utilizing a nozzle assembly disclosed herein generally addresses a need to improve methods for utilizing structures for delivering a fluid. The method of utilizing a nozzle assembly (10) comprises the steps of: providing a nozzle member (14) having a stem portion and a central passage (80,94) defined by at least an inner side surface (76,92a) and an inner distal surface (92b); assembling the nozzle assembly (10) by inserting a fluid atomizer (12) into the central passage (80,94) of the nozzle member (14); and inserting a distal portion (GD) of a spray gun (G) into the central passage (80,94) of the nozzle member (14) for: firstly urging a distal surface (56) of the fluid atomizer (12) adjacent the inner distal surface (92b) of the nozzle member (14) then secondly flexing legs (34) of the fluid atomizer (12) in a radially-outward direction in response to an application of an axial force to a proximal surface (26) of the fluid atomizer (12) for radially engaging the legs (34a, 34b) with the inner side surface (92a) of the nozzle member (14); and actuating the spray gun (G) for causing a fluid to travel from the spray gun (G), through the central passage (80,94) of the nozzle member (14); atomizing the fluid as the fluid travels through the central passage (80,94) of the nozzle member (14); and permitting the fluid to travel beyond the fluid atomizer (12) and out of the nozzle member (14) in an atomized spray pattern.