Analysis of still image

This picture shows our given genre which is supernatural thriller. Since it's a supernatural then there should be a sense of mystery and some things aren't very clear or don't make sense. We decided to create this effect by placing something in the photo which you cannot identify, and being a thriller, it needs to give a shock and slightly scare the audience and make them jump. This picture could be made better if you could see more clear that the perosn in the background is actually a person and not anything else by creating a better silhouette. I think that there also needs to be a more low key lighting to further more create the effect that a supernatural thiller is suppose to create.