The sole intent of a graphic artist is to create visuals that facilitate an idea or story. Sometimes there is no logic to the creation of the designs, and in other instances, the visuals are the platform for an entire story.
Above all, there is no limit to the kind or amount of mediums a graphic artist can use.
The design principles are not strict, but that doesn’t mean they should be disregarded. Consequently, graphic artists tend to bend or break some of the design rules, but only if it fits the composition or story being told.
A graphic artist’s portfolio might include: