There are two ways of doing this:
- Use the Pages feature to create pages on your website and add the images to those pages. Pages provide a powerful way to add content to your site. In order to get there, click on Website Builder on the main menu and then Manage Pages.
- Use the visibility feature when creating/editing a project to select whether it should be visible on ArtStation.com or only on your website. This is useful if you want to have a portfolio-type experience. This option is only available to users with a Premium Account.