Remember, this process is iterative!
At this stage you'll want to share your visualizations and get feedback to catch any biases that maybe affecting the readability of the graph. You want to also make sure people understand the story that you are trying to tell.
Questions to ask yourself:
Feedback questions to ask from users:
This is also a good stage to make sure you've cited your sources and have accounted for the labour that has gone into making this visualization.
One tool is this helpful checklist developed by Evergreen and Emery to rate your visualization.