Boys bedroom is very difference with girls bedroom, usually girls love with wallpaper scheme which based around thier hobbies or their interest such as barbie poster or mural wallpaper.
Look at picture this designed was designed with profesional designer, pink color was be dominant colors in the room equiped with tiles floor and some descorative light which placed on the side of bedroom.
While colors in the wall was painted with interesting image we recommended you to use this design for your girl bedroom.
More information look at the picture above. See also Kids Bedroom Wallpaper Ideas For Boys.