Art Prctive V: Studio Critique

Don't have much to show now, but for the class I'm planing on continuing my "couch series". I have enjoyed the series thus far and I think it has some artistic value, but the more I look at them I kinda feel like they fall flat in a sense. Its hard to put into words but they sometimes seem a little one dimensional or sort of hollow...I'm trying to find out what exactly. But that's not to say that I don't think they are worthless I still like em'...just need to figure out hoe to evolve them in to something more.