A nice texture for the floor would be nice so it isn't the same as the wall color. Where's the body? If not a body, maybe a bloody arm extending slightly from the bottom left or right of the scene. I'm working on a murder scene myself. It must be something in the water. TrekkieGrrrl has a morphing puddle which can be used for blood.

Poser 2, 3, 4, 5, 6, 7, 8, 9, 10, Pro 2014, 11, 11 Pro