can't share a deviantart link on facebook page.

Hello, I've been struggling for a couple of weeks trying to figure out how to do this. On September 14th, I posted the lineart version of a Scott Pilgrim poster I was working on my DeviantArt page. (primusjim) The next day, someone linked it on a Scott Pilgrim facebook page (scott pilgrim vs the world) . On September 27th, I posted the finished color illustration on DeviantArt and hoped it would also get linked to the facebook page. It never did, so I tried to figure out how to do it. I have thus far failed. Each deviantart page has a share on facebook icon to the right of the image, but every time I try, it tells me I need to specify a recipient. Can anyone help me out? Thanks