Code:
[portfolio post_type="page" post_parent="1002" content_width="926" image_ratio="6:5" columns="4" paging=true posts_per_page="12" orderby="id" order="DESC"]
[portfolio post_type="page" post_parent="1002" content_width="926" image_ratio="6:5" columns="4" paging=true posts_per_page="12" orderby="id" order="DESC"]