Ahh...now I remember. You gotta change the member function under the admin area of the group. There's a tab for members. It'll show you what a member can and cannot do. If you're an admin, you should be able to change it so that members can submit artwork.
Ahhh. Well, I have no idea if Anthiens (who's the leader) wants that or not (she merely stated she wanted links of fanart). I'll give her a quick check to see what she wants.
I'm not too sure how this new DA club works, but stated in this journal to link to Chess Piece fanart. I presume she'll do it herself. I recommend noting her the artwork.