It doesn't look like people can share individual images on social media through the widget, but you still have the share widget for your website that will help get people there. But it looks like the only way to share specific images is to get folks to your AW first.
On my own website (which is not photography oriented) I use a combination of slide show widgets, image links and text links to get people to my AW. You can see what I do at http://www.montereypeninsula.info but what I do may not be applicable to your situation.