Studies at MIT show that the human brain can process images that the eye sees for as little as 13 milliseconds. Not only does the brain need a very short time to take in an image, but half of the human brain is devoted directly or indirectly to vision. This means that visual representation of data can be a very powerful tool. However, this can only be realized if users can make sense of the visualization. This talk covers how to tailor the visualization to the use case, how to make wise data choices, how to incorporate an iterative process that integrates user feedback, and what kind of in-tool functionality to focus on.