Layout and composition are the building blocks of graphic design. A solid composition will intrigue attention, define understanding, and engage the viewer. Five principles are proximity, white space, alignment, contrast, and repetition.
Why is composition so important? In long and short, it's the way your attributes are arranged. Whether working with text, images, or elements in a graphic; without a thoughtful, well-composed layout, your work would essentially, crumble.
Putting it all together is the fun part of creating something that people will want to look at over and over!