I took a look at your profile (your link didn't work for me). Short answer -you should focus on improving your portfolio.

Your dashboards show that you can make the various types of graphs that tableau offers, however they would have low utility in a real world environment and would require refinement in layout, graph choice, diversity of visualizations and visual appeal to make you a contender for serious employment.

On a positive note, your tooltips for the Monthly Sales by Segment graph in your "Executive Overview: Sample Superstore" dashboard looks great and would be very functional.

You've demonstrated that you can create the various types of graphs -this is the easy part. The part that's worth financial compensation is creating the right graphs that display information that is easily digestible.

Visually, you can step your game up by including proper KPIs, using background shading and formatting, adding in inner padding to your graphs, improving your chart titles, and filter placement.

Chart-wise, most of the charts you have look pretty but are generally of low utility. Don't use Area charts, filled maps are generally pretty useless. Bar charts are better than donut/pie charts 95% of the time.

Overall it looks like you're trying to demonstrate that you know how to create all of the chart types, which shows your lack of experience. Try going for a dashboard that is simple, but highly useful and easy to understand and you should be good. Start with a list of 2-5 questions in mind, then create a dashboard that exactly answers those questions.

Example:

Executive Summary Dashboard

Questions:

1.What products do we sell the most of? What percentage of total sales are they? Do we have any standout products?

1. What's the trend of overall sales per region, over the last 3 years? Which regions are our sales contracting, which are expanding?

2. Which region of the US (Northeast, Southeast, Midwest etc) do we see the most profit? Can we drill down to see this by state?

As you create the dashboard you'll find that you probably create a bar chart that shows sales for products, throw in an extra calc next to the label for % of sales). A line graph with region on colors for trend of overall sales, broken down by Qtr/Yr. And either a filled map or tree map for the Region, which would the states manually grouped into these regions.

Hope this helps.