[widget title="" type="portfolio"][/widget]

[widget title="This is a title" type="portfolio" layout="6-column"][/widget]

[widget title="This is a title" type="portfolio" style="dark"][/widget]

[widget title="This is a title" type="portfolio" style="dark" category="standard, gallery"][/widget]

[widget title="This is a title" type="portfolio" order="ASC" orderby="rand"][/widget]

Available Order & Orderby Parameters please find on http://codex.wordpress.org/Class_Reference/WP_Query