If you are trying to figure out how to set up your own freelance designer profile and portfolio, one of the best things you can do is look around. Browse the Websites of other designers and take a close look at how they are set up--as well as what they include. Take some notes that will help you remember features that you really like. You might want to include some information on things you don't like as well.
You can also take a look at the Websites for larger firms that do work in your field. These can also be a good source of ideas. At the very least they can help give you an idea of current styles and trends when it comes to showcasing work. This will be an advantage when it comes to setting up your own portfolio. Looking at the work of others in your field can also help you be more aware of what the "competition" is doing so that you can set yourself apart.
Pay special attention to the style of companies that you may want to work with and see what you may have that suits their look and tone. This research can make you stand out from others when it comes to pitching your services as a freelance designer, as it shows you can produce work that matches their vision.