To add this to the group, you must first join the group, which can be found here:
http://www.mocpages.com/group.php/20405 . Next, press the button that says join this group (located at the top right). Finally, after joining, click the button that says "Add Your Own" (above the pictures of Lego creations on the group. You will be taken to a page that shows the main picture of each creation you've made. Click on the picture of this, and then click "done adding". Your creation will be added to the group. Hope this helps.