As a Star or Brand account, on the Settings page you'll find a tab labeled Links. If you access that, you're going to see a lot of fields, for multiple websites. Don't get panicked by how many they are! You don't need to fill out every one of them!
Scrolling down on the page, you'll find a set of empty fields under the section Paysites. You'll need to add the link to your personal sites in these fields, according to what website you're using.
After you hit Save Changes, these will show up on your Profile with the chosen website's icon. Clicking on them will open up your page on the respective website.