Rounded portfolio or portfolio with circular images is achieved with help of following shortcode available with the theme. –
[show_rounded_post_snippets post_count=12 image_size=’medium’ post_type=”portfolio” terms=”nature” taxonamy=”portfolio_category”]
While you cannot specify specific portfolio items to display in this portfolio shortcode, you can group these items into a category and then use the category to filter the portfolio items shown, as illustrated in the example above.