Picky picky

Why do I have to be pulled into this? I've been putting up suggestions since day one but she's too damn picky to do a simple poster and now I'm getting in trouble for doing nothing. I can't help it that she doesn't want a simply eight and a half by eleven poster to work off of. She wants huge posters but sh cant decide how she wants them done. She also wants to do the pictures her way. How am I supposed to do anything productive if she shuts down my every idea. I can't do shit if my partner isn't cooperative or can't compromise. It makes everything that I'm trying to do that much more difficult. It's something that I am trying so hard to do but for some reason she is just so unwilling. I seriously doubt that this group will get anything done with her trying to be the ringleader.