Well, I don't see why it shouldn't be. Me and my friend started this group as a fun and meaningful activity, both for ourselves and for anyone who wishes to participate. Both of us are very much alive and active as artists so, if you are worried about trying to add a piece to the group without anyone accepting it, you don't need to worry. If you like the idea and you think you would enjoy participating, by all means do it, you dont have to ask anyone.