As soon as you upload your first image to Mostphotos marketplace a portfolio page will automatically be created for you.
The portfolio page is like your shop window where you showcase your work. All your published images will be visible under your portfolio page, public and visible to everybody.
You can find your portfolio under the tab Portfolio Page that is shown if you click on the icon next to your picture in the upper right corner.
The portfolio page is completely free and gives you access to these features:
Contact firstname.lastname@example.org if you have any more questions or need any help.