My opinions for your reference.
First, be conscious about the audience.
Who are your audience? What information do they want? ...
Second, what's your objective?
I assumed that your objective is to show that you are capable for the job via the viz.
Now some specific options on your viz.
The space of Experience : Education : Skill = 1 : 1 : 2 .
I think the comapnies are most interested in Experience part.
And in your viz, there are long lines of description in tooltip.
So please feature this part in your resume, and make the contents easier to read.
I feel confused at the combination of resume and the workbook from the first sight.
From the resume, you are introduced as a BI analyst, while form the workbook you look like a data scientist.
The scenario of the viz doesn't appear clear to me.
What's the purpose of the viz? What's the story? Or is this a demo for Tableau function introduction?
What are the points? The visual design? The analysis approach? Or something else? Do these points appear charming to the company? Do these point demonstrate that you are capable for the job?
Thank You very much, Lei, for your feedback. You highlighted some good points on which I can improve. I will surely implement them to improve my skills.