the image is ta background image for teh post. The best you can do is going to ATO->Style POSTS & PAGES->POST Container: STICKY and changing
HTML Code:
background: #eee url(http://yourdomain.com/wp-content/themes/atahualpa/images/sticky.gif) 99% 5% no-repeat;
to
HTML Code:
background: #eee url(http://yourdomain.com/wp-content/themes/atahualpa/images/sticky.gif) 99% 0% no-repeat;
(the 5% becomes 0%)
and then adding the following to the CSS Inserts option
HTML Code:
div.sticky div.post-headline {margin-top: 20px;}