Developing a vision doesn't happen overnight. As a photographer, you slowly build the habit of paying attention to the scene in front of you. You start to take in the sounds, smells and emotions. You think about how to blend all of this into a still frame.
Photography, like any other profession, requires experience and specific skills. From knowing what lighting and camera settings to use, to knowing how to pose people and help them feel comfortable in front of the camera.
Great photographers don't rush the editing process either, it takes time to produce the desired result and turn your photo into a work of art that you'll proudly want to display in your home.