Well I tried, it was meant to be nightmarish, but it was all in good fun. I wasn't going to put my models through any danger by giving them a real knife, it was a joke! I'm not good at PS, it was first time I ever used it, this was just a project for school! I didn't expect to get a high score or to win. It was joke and an assignment.
uhh...yes, you can have lots of fun changing the hue in PS, but pictures like this rarely do well in competition. Also, can't believe the scenario taking place as both victim and killer are smiling, the knife is a butterknife, and there is no blood/gore on it.
Drop the overacting, get a steak knife and some fake blood and tell your models to get serious and really mean it.