A graphic designer has to be more than creative. Besides creative thinking, they need knowledge of design software and tools to keep themselves updated with every evolving design aspect.
If you are thinking of a future in graphic design, consider getting an MS in graphic design to learn the essential skills you need as a graphic designer.
The primary requirement to be a graphic designer is a vivid imagination. While design sense and aesthetic knowledge are significant criteria in graphic design, the ability of the designer to be imaginative and foresee design elements is essential. As a graphic designer, you should be creative and innovative to produce quality design.