Alright,
Your background is really cool looking, and though the "banner-like" images of the girls are nice, they do not fit in well with the wall.
I would work on find a high-quality scan of the three, or the three individually and vector/extract the images and place them into your wall.
I want to see more of the girls (waist up if not full body) in this wall, and add in some effects around them.
Right now, it just looks like three banners placed on a cool background, nothing more.
I hope this is helpful.
Don't give up, PM with your next revision.