We know every picture tells a story.
Some pictures are better storytellers thab others.
Our job as designers is to make sure we tell a good story, the right story. You study the work of successful graphic artists You look at the websites of cutting edge graphic houses You develop your powers of close observation by studying works of art in order to see the small details or subtleties that artists utilize to insure their message is understood by the audience You look at hundreds of examples and from those hundreds, find the ones that you enjoy, connect with or amaze you and pull them apart so that their structure is revealed. Using these method adds to your vocabulary as a designer, as a human being. We all learn from what has come before us. We take those observations and twist, stretch, compress them - manipulate them until our personal stamp appears.