I'd like to hang a wall collage in my son's nursery. I have the pieces that I'd like to use, but I'm not certain about the layout. Also, I have several pieces with identical frames, I'd like to work them into the collage but don't want them to seem out of place or overbearing.

The image shows four arrangements that I'm considering. The only thing that changes in these images are the middle three pieces. However, I'm open to the idea of a completely different layout as well. As you can see in the background the walls are bright blue and the crib is white.

Thanks in advance for your feedback!