Principles of Visual Design
Visual Design is, in itself, a science and an art. Think about infographics, websites, presentations, or ads that your eyes were immediately drawn to.
Here are some examples of well-done graphic design.
Recognize that there is a good use of negative space as well as fonts, colors, and images.
A good place to start with general visual design do’s and don’ts is at VisualMess. This site talks about the importance of “clean design” and how to not overload a design with information.
If you’d like a short video that shows a before and after example of how small design changes can make a dramatic visual difference, check out the 20 Quick Design Tips for Tableau Dashboards (14 minutes)