I had a go at using a round table as the images with the long rectangular one weren't working very well at all and I think it's definitely an improvement. I'm still not getting the angle right as it's still not dramatic enough but at least now I feel I'm on the right tracks.
I decided to add a little bit more detail in as well. I added some shadow and lighting as well as drawing onto the dead bodies to try to show vaguely what they are. I also had another play around with brushes, trying to add a little texture to the background and table.
I appreciate any feedback and criticism anyone has to offer, I keep getting myself a bit stuck and not quite reaching what I want.